Denmark's Case for Antibiotic-Free Animals by Katie Couric

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NEW YORK, Feb. 10, 2010

Denmark's Case for Antibiotic-Free Animals

Katie Couric Reports on Denmark's Ban on Antibiotics in Livestock

CBS) They call it the "Danish Experiment" - a source of pride for the country's 17,000 farmers. CBS Evening News Anchor Katie Couric reports how unlike industrial farms in the U.S., which use antibiotics to promote growth and prevent disease, farmers in Denmark use antibiotics sparingly, only when animals are sick.

The experiment to stop widespread use of antibiotics was launched 12 years ago, when European studies showed a link between animals who were consuming antibiotic feed everyday and people developing antibiotic resistant infections from handling or eating that meat.

"We don't want to use more medicine than needed, and a lot of the medicine that is given is not needed," said Soren Helmer. Helmer is a second-generation pig farmer whose sows produce more than 30,000 pigs a year. When the ban started, he and his father thought the industry would suffer.

"We thought we could not produce pigs as efficient as we did before," Helmer said. "But that was proven wrong."

Since the ban, the Danish pork industry has grown by 43 percent - making it one of the top exporters of pork in the world. All of Europe followed suit in 2006. But the American Pork Industry doesn't want to.

"What we've seen in Denmark and other countries is that they actually have had some increases in cost of what it takes to produce a pig," said Liz Wagstrom, a veterinarian with the National Pork Board.

"So it's not that unqualified a success. If we did the same thing in the United States, we would likely see small producers pushed out of business, we'd have more sick and dying pigs, and none of that would result in a benefit to the U.S. consumer."

Without growth-promoting antibiotics, it only costs $5 more for every 100 pounds of pork brought to market in this country.

Animal Antibiotics a Threat?

That's a small price for public health, says Dr. Ellen Silbergeld, who has been studying the antibiotic resistance link between livestock and people for the past decade.

"I think the Danish and European experience indicate that there will be real and measurable public health benefits," she said. "There'll be improvements in food safety and actually in the prevalence of drug resistant infections in people."

Pew Campaign on Human Health and Industrial Farming

According to one study, when different countries introduced certain antibiotics on farms, a surge occurred in people contracting antibiotic resistant intestinal infections one to two years later. One infection, Campylobacter, increased 20 percent in Denmark and 70 percent in Spain.

After the ban, a Danish study confirmed that removing antibiotics from farms drastically reduced antibiotic-resistant bacteria in animals and food.

Danish scientists believe if the U.S. doesn't stop pumping its farm animals with antibiotics, drug-resistant diseases in people will only spread.

"It's not going to be a time bomb that goes off like this," said Dr. Frank Aarestrup, of the Danish Food Institute at the University of Denmark. "It's something that's slowly getting more and more complicated, more difficult for us to actually treat infections.

Rep. Slaughter's "Preservation of Antibiotics for Medical Treatment Act"

Some American food producers agree.

"It's just gone too far," said Stephen McDonnell, CEO Applegate Farms.

"What most bothers you about the way industrial farmers in this country currently operate," Couric asked.

"We use too many antibiotics, we use too many growth promotants," McDonnell replied. "The singular focus is to create cheap meat. That's not always the best thing for the health of the Americans who buy it."

"We think with some subtle changes - giving them more space, feeding them a good diet, and not stressing them out by growing them too quickly - you don't even need to use antibiotics," McDonnell added.

McDonnell helps farmers like Duane Koch kick the habit.

"How long have you been raising turkeys, Duane, without using antibiotics," Couric asked.

"We started running without antibiotics roughly 14 years ago," Koch replied.

"Does it make you feel better doing it this way," Couric asked.

"Yeah," Koch said. "Because really, from using the antibiotics so long, a lot of them didn't work well any way anymore."

Today his 18 poultry farms scattered throughout Pennsylvania are more profitable than when he used antibiotics.

Koch says it costs very little to convert a farm to antibiotic-free. And it doesn't cost consumers much more either. People buying antibiotic free turkey thigh meat will spend around $1.40 versus $1.20 for conventionally raised birds.

Koch says higher-quality feed and improving living conditions, his birds are naturally healthier.

Couric asked, "What's the importance of giving them more space?"

"That's just our natural growth promotants," he said. "By giving them more space, we can get weights that are really close to what they're getting, you know, with the growth promotants."

Because farmers are raising livestock successfully without growth-promoting antibiotics - from Lebanon, Pennsylvania to outside Copenhagen - public health officials in this country say this is an idea whose time has come.

"We have identified here that we're talking about a public health issue, that the overuse of antibiotics on farms does pose a risk to human health," said Joshua Sharfstein of the FDA.

The FDA has for the first time come out against using certain antibiotics to promote growth in livestock.

And pending legislation in Congress would ban some types of antibiotics used to treat humans from being administered to healthy farm animals.

http://www.cbsnews.com/stories/2010/02/ ... 5054.shtml


Hello Ms. Couric Ma'am !

Thank you very much on that show of yours about antibiotics in meat, the over-use-of, and resistance there from, to humans and animals. Nice Job! The public is just oblivious to what is going on with the meat they eat. I thought the Danish study was remarkable, and proves what can be done, if an industry wants to do something. sadly, here in the USA, all the industry cares about is their bottom dollar. I have been most concerned about hormones, antibiotics, TSE aka mad cow disease, and other pathogens in meat for some time. I lost my mother to the Heidenhain Variant of Creutzfeldt Jakob Disease, considering North America is home to c-BSE, h-BSE, and the l-BSE in cattle, who is it to say that it should look exactly like the UK c-BSE ??? THEN, my last neck surgery, I believe my neurosurgeon did use a special bone grinder and a few extra precaustion, due to my Mother having died from hvCJD, and they damn near kill me with MRSA. Looking into to that, I was amazed at the amount of antibiotics and hormones that go into cattle due to the fact they are to sick to slaughter. 8 weeks vancomycin straight to the heart via long pic line made a believer in me. now I know some how I was infected probably via the operating arena, there were 7 other's the same week from the same surgcial unit, I was told later (this was in 2002), but we have become immune to these medicines due to over use, not only in humans but animals for human consumption as well. on most any given tuesday you can find something like this ;


October 9,2009

WARNING LETTER

CERTIFIED MAIL RETURN RECEIPT REQUESTED

Keith L. Schaeffer Owner Evergreen Acres Dairy, LLC 26162 240th Street Paynesville, Minnesota 56362

Dear Mr. Schaeffer:

Refer to MIN 10 - 01

On April 23 and May 4,2009, the Minnesota Department of Agriculture conducted an investigation of your dairy operation located at 26162 240th Street, Paynesville, Minnesota. This letter notifies you of the violations of the Federal Food, Drug, and Cosmetic Act (the Act) that were found during the investigation of your operation. You can find the Act and its associated regulations on the Internet through links on FDA's web page at www.fda.gov.

The investigation found that you offered for sale an animal for slaughter as food that was adulterated. Under section 402(a)(2)(C)(ii) of the Act, 21 U.S.C. § 342(a)(2)(C)(ii), a food is deemed to be adulterated if it bears or contains a new animal drug that is unsafe under section 512 of the Act, 21 U.S.C. § 360b. Further, under section 402(a)(4) of the Act, 21 U.S.C. § 342(a)(4), a food is deemed to be adulterated if it has been held under insanitary conditions whereby it may have been rendered injurious to health.

Specifically, the investigation revealed that on or about September 16, 2008, you sold a dairy cow identified with your farm ear tag #(b)(4)for slaughter as food. On or about September 17, 2008, (b)(4) slaughtered this animal. United States Department of Agriculture, Food Safety and Inspection Service (USDA/FSIS) analysis of tissue samples collected from this animal identified the presence of neomycin at 31.05 parts per million (ppm) in kidney tissue. FDA has established a tolerance of 7.2 ppm neomycin residue in kidney tissue as codified in Title 21, Code of Federal Regulations, Section 556.430(b)(1), 21 C.F.R. 556.430(b)(1). The presence of this drug in kidney tissue from this animal in this amount causes the food to be adulterated within the meaning of section 402(a)(2)(C)(ii) of the Act, 21 U.S.C. § 342(a)(2)(C)(ii).

The investigation also found that you hold animals under conditions that are so inadequate that medicated animals bearing potentially harmful drug residues are likely to enter the food supply. For example, you failed to maintain complete treatment records. Food from animals held under such conditions is adulterated within the meaning of section 402(a)(4) of the Act, 21 U.S.C. § 342(a)(4).

The investigation also found that you adulterated the new animal drugs neomycin sulfate, sulfadimethoxine oral solution, oxytetracycline injection, oxytetracycline hydrochloride injection, ceftiofur hydrochloride, ceftiofur crystalline free acid, ceftiofur sodium, penicillin G procaine aqueous suspension, florfenicol, tetracycline hydrochloride soluble powder, and tylosin. Specifically, the investigation revealed that you did not use these drugs as directed by their approved labeling. Use of these drugs contrary to their approved labeling is an extralabel use. See 21 C.F.R. 530.3(a).

The extralabel use of approved animal or human drugs in animals is allowed under the Act only if the extralabel use complies with sections 512(a)(4) and (5) of the Act, 21 U.S.C. §§ 360b(a)(4) and (5), and 21 C.F.R. 530, including that the use must be by or on the lawful order of a licensed veterinarian within the context of a valid veterinarian/ client/patient relationship.

The investigation found that you administered neomycin sulfate to lactating dairy cows contrary to the approved indication of use. Neomycin sulfate is not approved for the treatment and control of Salmonella infections. Your extralabel use of neomycin sulfate was not in compliance with 21 C.F.R. 530, and your extralabel use of neomycin sulfate resulted in an illegal drug residue, in violation of 21 C.F.R. 530.11(d).

The investigation also found that you administered the following new animal drugs contrary to the conditions of use set forth in their approved labeling, and you did so without the supervision of a licensed veterinarian, in violation of 21 C.F.R. 530.11(a):

1. Neomycin sulfate (b)(4) - You administered neomycin sulfate to a lactating dairy cow without following the approved indication of use. Neomycin Sulfate (Neomycin Liquid) is not approved for the treatment and control of Salmonella infections.

2. Sulfadhnethoxine oral solution (b)(4) - You administered sulfadimethoxine oral solution to lactating dairy cows without following the approved route of administration, indications for use, and animal class. Sulfadimethoxine oral solution is not approved for intravenous injection, not approved to treat peritonitis, and not approved for use in lactating dairy cows. Furthermore, sulfonamide drugs, which include sulfadimethoxine, are prohibited for extralabel use in lactating dairy cows by 21 C.F.R. 530.41(a)(9).

3. Oxytetracycline injection (b)(4) - You administered oxytetracycline injection to lactating dairy cows without following the approved dose per injection site. Oxytetracycline injection is not approved for use at more than 10 mL per injection site.

4. Oxytetracycline hydrochloride injection (b)(4) - You administered oxytetracycline hydrochloride injection to lactating dairy cows without following the approved animal class and indications for use. Oxytetracycline hydrochloride injection is not approved for use in lactating dairy cattle, or to treat peritonitis.

5. Ceftiofur hydrochloride (b)(4) - You administered ceftiofur hydrochloride to lactating dairy cows without following the approved indications for use. Ceftiofur hydrochloride is not indicated for treating watery mastitis in cattle, or for post-surgical use.

6. Ceftiofur crystalline free acid (b)(4) - You administered ceftiofur crystalline free acid to lactating dairy cows without following the approved indications of use. Ceftiofur crystalline free acid is not indicated for treating watery mastitis, foot rot, or metritis in cattle, nor is it approved for postsurgical use.

7. Ceftiofur sodium (b)(4) - You administered ceftiofur sodium to lactating dairy cows without following the approved indications for use. Ceftiofur sodium is not indicated for treating watery mastitis or metritis in cattle, nor is it approved for post-surgical use.

8. Penicillin G procaine (b)(4) - You administered penicillin G procaine aqueous suspension to lactating dairy cows without following the approved indications for use, dosage amount, or dosage amount per injection site. Penicillin G procaine aqueous suspension is not indicated for treating mastitis in cattle, not approved at a dose more than 1 mLI100 pounds of body weight, and not approved for use at the rate of more than 10 mL per injection site.

9. Florfenicol (b)(4) - You administered florfenicol to lactating dairy cows without following the approved animal class. Florfenicol is not approved for use in female dairy cattle 20 months of age or older.

10.Tetracycline hydrochloride soluble powder (b)(4) - You administered tetracycline hydrochloride soluble powder to lactating dairy cows without following the approved animal class and indications for use. Tetracycline hydrochloride soluble powder is not approved for treating dairy cows or for treatment of uterine infections.

11. Tylosin (b)(4) - You administered tylosin to dairy calves without following the approved route of administration and indications for use.Tylosin is not approved for oral administration, nor is the drug approved for preventing scours (bacterial enteritis) in dairy calves. Furthermore, the extralabel use of approved new animal or human drugs in or on an animal feed (milk) is prohibited by 21 C.F.R. 530.11(b).

Because your use of these drugs was not in conformance with their approved labeling and did not comply with 21 C.F.R. 530, you caused the drugs to be unsafe under section 512(a) of the Act, 21 U.S.C. § 360b(a), and adulterated within the meaning of section 50 1(a)(5) of the Act, 21 U.S.C. § 351(a)(5).

In addition, you adulterated animal feed (milk) within the meaning of section 501 (a)(6) of the Act, 21 U.S.C. § 351 (a)(6). You administered tylosin to dairy calves to prevent Escherichia coli (E. colI) scours by mixing the drug in milk. This caused the animal feed (milk) to which the drug was added to be unsafe within the meaning of section 512(a)(2) of the Act, 21 U.S.C. § 360b(a)(2), and adulterated under section 501(a)(6) of the Act, 21 U.S.C. § 351(a)(6).

The above is not intended to be an all-inclusive list of violations. As a producer of animals offered for use as food, you are responsible for ensuring that your overall operation and the food you distribute are in compliance with the law.

You should take prompt action to correct the violations described in this letter and to establish procedures to ensure that these violations do not recur. Failure to do so may result in regulatory action without further notice such as seizure and/or injunction.

You should notify this office in writing of the steps you have taken to bring your firm into compliance with the law within 15 working days of receiving this letter. Your response should include each step that has been taken or will be taken to correct the violations and to prevent their recurrence. If corrective action cannot be completed within 15 working days of receiving this letter, state the reason for the delay and the time frame within which the corrections will be completed. Please include copies of any available documentation demonstrating that corrections have been made.

Your written response should be sent to Dr. Brian D. Garthwaite, Compliance Officer, U.S. Food and Drug Administration, at the address located on the letterhead. If you have any questions about this letter, please contact Dr. Garthwaite at (612) 758-7132.

Sincerely,

/s/

W. Charles Becoat Director Minneapolis District

BDG/ccl

(b)(4)

Doug Leuders Minnesota Department of Agriculture 625 North Robert Street St. Paul, Minnesota 55155

District Manager, USDA-FSIS Butler Square West, Suite 989-C 100 North Sixth Street Minneapolis, Minnesota 55403

http://www.fda.gov/ICECI/EnforcementAct ... 186791.htm


“October 2009

It should be noted that humans can become more susceptible to infection with antimicrobial-resistant zoonotic bacteria to which they are exposed. This can happen, when there has been prior use of antimicrobials, resulting in decrease in colonization resistance (dysregulation of intestinal microbiota) and an increased vulnerability to gastrointestinal illness with antimicrobial-resistant food-borne pathogens. This applies to all infections with all micro-organisms listed in this document.

snip...


http://www.efsa.europa.eu/cs/BlobServer ... inary=true


http://www.fda.gov/ICECI/EnforcementAct ... 189754.htm


Our investigation also found that you hold animals under conditions that are so inadequate that medicated animals bearing potentially harmful drug residues are likely to enter the food supply.


http://www.fda.gov/ICECI/EnforcementAct ... 189720.htm


Our investigation also found that you hold animals under conditions that are so inadequate that medicated animals bearing potentially harmful drug residues are likely to enter the food supply.


http://www.fda.gov/ICECI/EnforcementAct ... 189789.htm


Our investigation also found that you hold animals under conditions that are so inadequate that medicated animals bearing potentially harmful drug residues are likely to enter the food supply.

Recently Posted Warning Letters Posted on November 17, 2009


http://www.fda.gov/ICECI/EnforcementAct ... efault.htm


see also my blog on MRSA here ;


http://staphmrsa.blogspot.com/



Friday, January 29, 2010

14th International Congress on Infectious Diseases H-type and L-type Atypical BSE January 2010 (special pre-congress edition)


http://bse-atypical.blogspot.com/2010/0 ... ss-on.html


*** CJD USA RISING, with UNKNOWN PHENOTYPE ;

5 Includes 41 cases in which the diagnosis is pending, and 17 inconclusive cases; 6 Includes 46 cases with type determination pending in which the diagnosis of vCJD has been excluded.


http://www.cjdsurveillance.com/pdf/case-table.pdf


Saturday, January 2, 2010

Human Prion Diseases in the United States January 1, 2010 ***FINAL***


http://prionunitusaupdate2008.blogspot. ... tates.html


my comments to PLosone here ;


http://www.plosone.org/annotation/listT ... 31e2bfa6fd


Thursday, February 4, 2010

SPONGIFORM ENCEPHALOPATHY ADVISORY COMMITTEE Draft Minutes of the 103rd Meeting held on 24th November 2009


http://seac992007.blogspot.com/2010/02/ ... isory.html


Friday, February 05, 2010

New Variant Creutzfelt Jakob Disease case reports United States 2010 A Review


http://vcjd.blogspot.com/2010/02/new-va ... sease.html


Wednesday, February 10, 2010

NAIS MAD COW TRACEABILITY DUMPED BY USDA APHIS 2010


http://naiscoolyes.blogspot.com/2010/02 ... ed-by.html




Terry S. Singeltary Sr.
P.O. Box 42
Bacliff, Texas USA 77518




Thursday, February 11, 2010

Denmark's Case for Antibiotic-Free Animals NEW YORK, Feb. 10, 2010


http://staphmrsa.blogspot.com/2010/02/d ... -free.html
 
IN regards to the Industry hype about that mean old Katie Couric and CBS on
the Danish Study on antibiotics and the overuse there of, or not, I wish to
submit the following.


>We identified a clone of S. aureus previously associated with outbreaks of
>infections in animals and in humans who work with animals in 2 unique
>collections of S. aureus isolates. The first was from a population-based
>study of S. aureus colonization among residents of northern Manhattan in
>New York, NY, USA; <


>Consequently, the clone is identified by multilocus sequence typing as
>sequence type 398 (ST398). <




please see below ;





MRSA ST398 HUMANS

From Emerging Infectious Diseases Staphylococcus aureus ST398, New York City
and Dominican Republic Meera Bhat; Caroline Dumortier; Barbara S. Taylor;
Maureen Miller; Glenny Vasquez; Jose Yunen; Karen Brudney; Jacqueline
Sánchez E.; Carlos Rodriguez-Taveras; Rita Rojas; Patricia Leon; Franklin D.
Lowy

Authors and Disclosures

Posted: 05/11/2009; Emerging Infectious Diseases © 2008 Centers for Disease
Control and Prevention (CDC)

Abstract Closely related Staphylococcus aureus strains of ST398, an
animal-associated strain, were identified in samples collected from humans
in northern Manhattan, New York, NY, USA, and in the Dominican Republic. A
large population in northern Manhattan has close ties to the Dominican
Republic, suggesting international transmission.

Introduction

In the past 5 years, as methicillin-resistant Staphylococcus aureus (MRSA)
has emerged as a community pathogen, awareness of the role of animal
exposure from pets or farming as sources of MRSA has increased.[1-3] We
identified a clone of S. aureus previously associated with outbreaks of
infections in animals and in humans who work with animals in 2 unique
collections of S. aureus isolates. The first was from a population-based
study of S. aureus colonization among residents of northern Manhattan in New
York, NY, USA; the second was from isolates obtained from the Dominican
Republic. This clone does not digest with the restriction enzyme SmaI, which
is generally used for pulsed-field gel electrophoresis (PFGE). Consequently,
the clone is identified by multilocus sequence typing as sequence type 398
(ST398). Both methicillin-resistant and methicillin-susceptible isolates of
S. aureus have been reported.[4] ST398 has been found primarily in Europe,
where it has been isolated from pigs and pig farmers in the Netherlands and
France and from dogs, pigs, horses, and humans in Germany and Austria.[5-8]
Colonization with MRSA ST398 has recently been reported in pigs and pig
farmers in Canada.[9]

snip...

The Study

The community-based study was conducted from 2004 through 2007 in the
northern section of Manhattan, a borough of New York City. Northern
Manhattan contains a large, medically underserved population that has close
ties to the Dominican Republic. Participants were recruited by using
random-digit dialing. Consenting persons and household members were
subsequently interviewed and screened for S. aureus colonization. A total of
321 eligible households containing 914 household members participated. In 9
households, 13 participants were found to be colonized with S. aureus
isolates that were SmaI resistant. Digestion with the Cfr9I, an isoschizomer
of SmaI, yielded identical PFGE profiles (Figure). Subsequent multilocus
sequence typing confirmed the ST398 identification (allelic profile
3-35-19-2-20-26-39). All strains were methicillin susceptible. A
representative strain was spa-typed as type t571 (allelic profile
8-16-2-25-2-25-34-25, eGenomics type 109); it was Panton-Valentine
leukocidin negative.

Characteristics of persons colonized with ST398 were similar to those of
persons in the community-based study and with northern Manhattan census
characteristics (Table). The 13 isolates were from 9 different families; 1
family had 4 members colonized with ST398 at either nasal or axillary sites.
The mean age of those colonized was 33.4 years; only 1 child (7 years of
age) was colonized. Two persons from different families were colonized with
ST398 at multiple sites, none of which were confirmed as infections.

No household reported owning pets, although 2 reported animal contact. Of
the 12 adults, 5 (41.7%) reported possible job exposure to S. aureus,
including 1 who worked in a healthcare-associated field. No household
reported patronizing viveros, or live poultry markets, which are common in
the Latino communities of northern Manhattan and the Bronx. Two households
reported having children who attended day care, although none of these
children were colonized with S. aureus. Although 15% of the Dominican
population in the study reported travel to the

Page 2 of 7

Dominican Republic within 6 months of their interview, none of the colonized
participants reported recent travel to the Dominican Republic. No contact
among the different households was reported.

snip...


http://www.cdc.gov/eid/content/15/2/pdfs/08-0609.pdf



First human isolates of methicillin-resistant Staphylococcus aureus sequence
type 398 in Spain

C. Potel & M. Álvarez-Fernández & L. Constenla & P. Álvarez & S. Perez
Received: 31 July 2009 / Accepted: 13 December 2009 # Springer-Verlag 2010

To the Editor,

An emerging sequence type (ST) 398 methicillin-resistant Staphylococcus
aureus (MRSA) clone producing infections in humans has been detected across
Europe [1]. Recent studies indicate that it is widely distributed in farm
animals, particularly in pigs, suggesting transmission between animals and
humans [2].

The frequency of MRSA ST398 in the Spanish population is unknown. In this
study, we present the first three human cases of MRSA ST398 infections
admitted to two hospitals in the north-west of Spain.

Forty-four MRSA strains were isolated in 2006 in both hospitals. They were
studied by the analysis of restriction fragment length polymorphism (RFLP)
of the coagulase gene patterns and pulsed-field gel electrophoresis (PFGE)
[3, 4]. Three non-Sma I typeable MRSA strains were identified; the three
strains were EagI PFGE typeable. Next, they were analyzed by multilocus
sequence typing (MLST) and spa typing [5, 6]. The staphylococcal chromosome
cassette (SCC) mec, the accessory gene regulator (agr) types, and the
Panton-Valentine leukocidin (PVL)-encoding genes were polymerase chain
reaction (PCR)-identified [7-9].

The three strains were resistant to tetracycline. Besides, one isolate was
resistant to levofloxacin, tobramycin, and erythromycin, and another isolate
was resistant to levofloxacin and clindamycin, and susceptible to
erythromycin; this rare phenotype has already been described [2]. The three
MRSA isolates were identical by RFLP. By EagI PFGE, they were closely
related following Tenover's criteria (Fig. 1) [10]. All isolates were ST398,
SCCmec-V, agr-1, and PVL genes-negative. They belonged to three spa types;
t108, t011, and t1255.

The age of the three patients was 59, 82, and 83 years, respectively. Two
patients owned pigs and the other a calf. Two patients were diabetic and
were hospitalized because they developed skin and soft-tissue infections by
MRSA ST398. The third patient had bronchitis and the strain was isolated
from a respiratory secretion submitted to the laboratory from an outpatient
clinic. The three patients had had multiple hospital admissions in the last
12 months.

As it has been described previously, the ST398 isolates were resistant to
tetracycline [2]. Only another strain from the 44 MRSA strains studied was
also resistant to tetracycline. This one belonged to the ST239 clone that
was epidemic in north-west Spain until 2002, and since then, it has scarcely
been isolated [3]. The ST239 clone is easily identified because of the
homogeneity in the resistance profile (it is also resistant to levofloxacin,
gentamicin, tobramycin, erythromycin, clindamycin,
trimethoprim-sulfamethoxazole, and chloramphenicol) [3]. Therefore, it can
be stated that the resistance to tetracycline could be a local marker for a
presumptive identification of the ST398 clone.


http://www.springerlink.com/content/p88 ... pdf?page=1



Volume 16, Number 1-January 2010

Letter

Skin Lesion Caused by ST398 and ST1 MRSA, Spain1

Carmen Aspiroz, Carmen Lozano, Ana Vindel, Juan J. Lasarte, Myriam Zarazaga,
and Carmen Torres Author affiliations: Hospital Royo Villanova, Zaragoza,
Spain (C. Aspiroz); Universidad de La Rioja, Logroño, Spain (C. Lozano, M.
Zarazaga, C. Torres); Centro Nacional Microbiología, Madrid, Spain (A.
Vindel); and Centro Salud San Mateo de Gállego, Zaragoza (J.J. Lasarte)

Suggested citation for this article

To the Editor: Human infections caused by methicillin-resistant
Staphylococcus aureus (MRSA) sequence type 398 (ST398) have been emerging in
recent years in Europe (1,2). Pigs represent a common reservoir of MRSA
ST398, and working with these animals may constitute a risk factor for MRSA
carriage and possible infection (2-4). We report a case of human infection
caused by MRSA ST398 in Spain.

SEE FULL TEXT ;


http://www.cdc.gov/eid/content/16/1/157.htm



Eurosurveillance, Volume 13, Issue 9, 28 February 2008

Rapid communications

First outbreak of methicillin-resistant Staphylococcus aureus ST398 in a
Dutch hospital, June 2007

M WH Wulf ([email protected])1, A Markestein2, F T van der Linden3, A
Voss4, C Klaassen4, C M Verduin1,2

1. Laboratory for Pathology and Medical Microbiology, Veldhoven, the
Netherlands 2. Department of Hospital Infection Control, St Anna Hospital,
Geldrop, the Netherlands 3. Department of Surgery, St Anna Hospital,
Geldrop, the Netherlands 4. Department of Medical Microbiology and
Infectious Diseases, Canisius-Wilhelmina Hospital, Nijmegen, the Netherlands

We describe the first outbreak of non-typable methicillin-resistant
Staphylococcus aureus on a surgical ward in the Netherlands in June 2007.
Nine cases of infection and/or colonisation were found among patients and
healthcare workers.

Background

In the Netherlands, the proportion of methicillin-resistant S. aureus (MRSA)
among clinical isolates of S. aureus is still low [1], but
community-acquired MRSA occurs more frequently [2]. This increase is mainly
caused by so called 'non-typable' MRSA (NTMRSA, i.e. not typable by
pulsed-field gel electrophoresis (PFGE) with Sma1 restriction digest [3])
belonging to multilocus sequence typing (MLST) type ST398 [4].

These strains are widely disseminated among pigs, veal calves and people in
contact with pigs [5-8]. An association between the use of antibiotics in
pig farming and the dissemination of these strains has been suggested [6,8],
since the majority of ST398 MRSA are tetracycline-resistant and
oxytetracyclins are the most frequently used antibiotics in pig farming.

Transmission within families, as well as single cases of colonised
healthcare workers, have been described [5]. One report indicates possible
healthcare-acquired infections with a Panton-Valentine leukocidin (PVL)-
positive ST398 strain in China [9], but no nosocomial transmission to
multiple patients or healthcare workers has occurred in the Netherlands to
date.

Outbreak description

In June 2007, MRSA was cultured from a diabetic foot ulcer of a patient on a
surgical ward. Subsequent screening of contacts among patients and
healthcare workers revealed four additional patients with MRSA infection
and/or colonisation and five healthcare workers who carried MRSA.

Two of the five affected patients (one with prostate carcinoma and one with
a diabetic foot) were successfully decolonised with mupirocin nasal
ointment, chlorhexidine wash, and treatment with trimetoprim/rifampicin.

A further colonised patient with a gastro-intestinal malignancy and two
patients with infected diabetic foot ulcers remained colonised, despite
several decolonisation regimens.

Of 238 healthcare workers who were screened, five were colonised in the nose
and/or throat and had no skin conditions. All five have been treated with
mupirocin nasal ointment and chlorhexidine wash and successfully
decolonised.

All strains were resistant to tetracycline and non-typable by PFGE.
Spa-typing showed that all strains were spa-type t567. This spa-type
corresponds to MLST type 398, a type previously found in pigs.

None of the patients had had contact with pigs or veal calves. One
healthcare worker lived on the grounds of a pig farm but neither she nor her
partner came into contact with pigs themselves. While we presume that this
health care worker was the source of the infection, this could not be
proven. Permission to sample the pigs on this farm was not granted.

Conclusions

The NT-MRSA strain responsible for this outbreak was spa-type t567, which
corresponds to MLST type ST398, the clonal complex to which most of NT-MRSA
strains belong. This outbreak shows that transmission on a larger scale than
a one-on-one transmission between caretaker and patient can occur with
NT-MRSA in a hospital setting.

References


http://www.eurosurveillance.org/images/ ... rt8051.pdf



EDITORIAL

MRSA in livestock animals-an epidemic waiting to happen?

M. Wulf 1 and A. Voss 2,3 1 PAMM Laboratory for Medical Microbiology,
Veldhoven , 2 Department of Medical Microbiology, Nijmegen University Centre
for Infectious Diseases, Radboud University Nijmegen Medical Centre and 3
Department of Medical Microbiology and Infectious Diseases,
Canisius-Wilhelmina Hospital, Nijmegen, The Netherlands Corresponding author
and reprint requests: A. Voss, Department of Medical Microbiology, Nijmegen
University Centre for Infectious Diseases, Radboud University Nijmegen
Medical Centre, Nijmegen, The Netherlands E-mail: [email protected]
Copyright © 2008 European Society of Clinical Microbiology and Infectious
Diseases KEYWORDS Community-acquired MRSA . epidemiology . livestock .
methicillin-resistant Staphylococcus aureus . pig farming . ST398 ABSTRACT

Screening of pig farmers and pigs in The Netherlands has revealed that >20%
of pig farmers and 39% of slaughterhouse pigs are positive for an unusual
strain of methicillin-resistant Staphylococcus aureus (MRSA) belonging to
sequence type (ST) 398. It is now clear that the emergence of ST398 is not
just a Dutch problem, with human infections being described in several
European countries, Canada and Singapore. Furthermore, some human isolates
have now acquired the genes encoding Panton-Valentine leukocidin. Livestock
may become an important source of community-acquired MRSA. A concerted
effort on the part of clinicians, infection control practitioners and
veterinarians will be required to prevent further spread of this novel
strain of MRSA.

--------------------------------------------------------------------------------

DIGITAL OBJECT IDENTIFIER (DOI) 10.1111/j.1469-0691.2008.01970.x About DOI


http://www3.interscience.wiley.com/jour ... 1&SRETRY=0



Emerg Infect Dis. 2009 May; 15(5): 845-847. doi: 10.3201/eid1505.081417.
PMCID: PMC2687035

Copyright notice

Community-acquired Methicillin-Resistant Staphylococcus aureus ST398
Infection, Italy

Angelo Pan, Antonio Battisti, Alessia Zoncada, Francesco Bernieri, Massimo
Boldini, Alessia Franco, Maurilio Giorgi, Manuela Iurescia, Silvia
Lorenzotti, Mario Martinotti, Monica Monaci, and Annalisa Pantosti Istituti
Ospitalieri di Cremona, Cremona, Italy (A. Pan, A. Zoncada, F. Bernieri, S.
Lorenzotti, M. Martinotti) Istituto Zooprofilattico Sperimentale delle
Regioni Lazio e Toscana, Rome, Italy (A. Battisti, A. Franco, M. Iurescia)
Istituto Zooprofilattico Sperimentale delle Regioni Lombardia ed
Emilia-Romagna, Cremona (M. Boldini) Azienda Sanitaria Locale di Cremona,
Cremona (M. Giorgi) Istituto Superiore di Sanità, Rome (M. Monaci, A.
Pantosti)

Corresponding author. Address for correspondence: Angelo Pan, Divisione di
Malattie Infettive, Istituti Ospitalieri di Cremona, Largo Priori 1, 26100
Cremona, Italy; email: [email protected]

Keywords: Antimicrobial resistance, staphylococci, Staphylococcus aureus,
community acquired, MRSA, ST398, pig strain, bloodstream infection, letter

To the Editor: Community-acquired methicillin-resistant Staphylococcus
aureus (CA-MRSA) has been identified in livestock animals (particularly
pigs), veterinarians, and animal farm workers (1,2). CA-MRSA strains from
pigs have been classified most frequently within the multilocus sequence
type (ST) 398 (1) and have been rarely identified as a cause of invasive
infection in humans (1,3,4). We report a case of invasive infection in a
pig-farm worker in Cremona, Italy, an intensive animal farming area; the
infection was caused by MRSA of swine origin, ST398.

full text ;


http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2687035/



EID Journal Home > Volume 16, Number 2-February 2010

Volume 16, Number 2-February 2010 Letter Methicillin-Resistant
Staphylococcus aureus ST398, Italy Laura Soavi, Roberto Stellini, Liana
Signorini, Benvenuto Antonini, Palmino Pedroni, Livio Zanetti, Bruno
Milanesi, Annalisa Pantosti, Alberto Matteelli, Angelo Pan, and Giampiero
Carosi Author affiliations: University of Brescia, Brescia, Italy (L. Soavi,
R. Stellini, L. Signorini, A. Matteelli, G. Carosi); Presidio Ospedaliero di
Manerbio, Manerbio, Italy (B. Antonini, P. Pedroni, L. Zanetti, B.
Milanesi); Istituto Superiore di Sanità, Rome, Italy (A. Pantosti); and
Istituti Ospitalieri di Cremona, Cremona, Italy (A. Pan)

Suggested citation for this article

To the Editor: It has recently become apparent that livestock can constitute
a new methicillin-resistant Staphylococcus aureus (MRSA) reservoir and be a
source of a novel and rapidly emerging type of MRSA. These
livestock-associated MRSA clones are nontypeable by use of pulsed-field gel
electrophoresis with SmaI and belong to sequence type (ST) 398 (1). MRSA
ST398 clones account for 20% of all MRSA in the Netherlands (2), but the
emergence of such clones has been described worldwide (3). Although ST398
transmission has been reported primarily between animals, persons with
occupational exposure to livestock are at higher risk for MRSA carriage than
the general population. Even though MRSA ST398 usually causes colonization,
several cases of infections of variable clinical relevance, varying from
skin and soft tissue infections (4) to endocarditis (5) and pneumonia (6),
have been described over the past few years. Most instances of ST398 human
carriers have been identified among persons who work at pig farms (7). Data
regarding MRSA colonization of dairy farmers are less exhaustive and, to our
knowledge, only 1 instance of direct transmission between cattle and humans
has been proven. MRSA isolates from cows with subclinical mastitis in 2007
in Hungary were indistinguishable from MRSA isolates from the tonsil swab of
a farmer who worked with these animals (. We report a case of MRSA ST398
invasive disease in a cattle farmer, as well as a case of MRSA ST398
necrotizing fasciitis


http://www.cdc.gov/eid/content/16/2/346.htm



Volume 15, Number 7-July 2009 Dispatch Methicillin-Resistant Staphylococcus
aureus ST398 in Swine Farm Personnel, Belgium Olivier Denis, Carl Suetens,1
Marie Hallin, Boudewijn Catry, Ilse Ramboer, Marc Dispas, Glenda Willems,
Bart Gordts, Patrick Butaye, and Marc J. Struelens Author affiliations:
Université Libre de Bruxelles Hôpital Erasme, Brussels, Belgium (O. Denis,
M. Hallin, M.J. Struelens); Scientific Institute of Public Health, Brussels
(C. Suetens, B. Catry, I. Ramboer); Veterinary and Agrochemical Research
Centre, Brussels (M. Dispas, G. Willems, P. Butaye); and AZ Sint-Jan,
Brugge, Belgium (B. Gordts)

Abstract We assessed methicillin-resistant Staphylococcus aureus (MRSA) in
persons on 49 swine farms in Belgium. Surveys showed that 48 (37.8%) persons
carried MRSA ST398 and 1 (0.8%) had concurrent skin infection. Risk factors
for carriage were MRSA carriage by pigs, regular contact with pigs and
companion animals, and use of protective clothing.

snip...

Conclusions Human carriage of MRSA was associated with swine colonization
with MRSA. Prevalence rate (38%) was higher than that for hospitalized
patients or nursing home residents in Belgium
(www.nsih.be/surv_mrsa/download_fr.asp). MRSA isolates from farmers belonged
to closely related spa types corresponding to ST398, which are unrelated to
hospital- and community-acquired strains but identical to strains from
humans in contact with pigs in other European countries (1,2,10).

Despite the high prevalence of nasal MRSA, active MRSA skin infection was
detected infrequently (<1%), within the range described in recent US-based
studies (11). In a hospital in the Netherlands, a lower attack rate was
found for MRSA ST398 than for other MRSA strains (12). However, invasive
infections caused by MRSA ST398 have been reported, suggesting that this
genotype is pathogenic for humans (2). In our study, MRSA strains did not
harbor exotoxin.

Two MRSA genotypes were predominant. For 70% of farms with multiple MRSA
carriers, all strains belonged to the same genotype, suggesting transmission
within the farm. Although these strains have been shown to not spread easily
in hospitals (12), outbreaks of MRSA ST398 in a residential care facility
and a hospital probably originated from healthcare workers living on pig
farms (13,14). In contrast with MRSA strains, MSSA isolates in our study
showed diverse genotypes that frequently colonize human populations (4).
MSSA isolates from 3 farmers belonged to the ST398 genotype, which is
infrequently reported in humans except in pig farmers with contact with pigs
(4).

Risk factors for MRSA ST398 carriage included regular contact with pigs but
also with horses and dogs (10), suggesting that different animals could be
MRSA ST398 reservoirs or vectors, at least on pig farms. Protective measures
did not seem to reduce the risk of becoming colonized with MRSA; this lack
of effectiveness has previously been observed for veterinarians (15). This
apparent lack of protection should be further investigated to determine
routes of transmission other than direct contact with pigs, including
airborne transmission and contact with contaminated surfaces and companion
animals.


http://www.cdc.gov/EID/content/15/7/1098.htm



doi:10.1016/j.vetmic.2009.12.044 | How to Cite or Link Using DOI Copyright ©
2010 Elsevier B.V. All rights reserved. Permissions & Reprints

Methicillin-resistant Staphylococcus aureus (MRSA) ST398 associated with
clinical and subclinical mastitis in Belgian cows

Wannes Vanderhaeghena, b, , , , Tineke Cerpentierc, Connie Adriaensena, Jo
Viccac, Katleen Hermansb and Patrick Butayea, b

a Veterinary and Agrochemical Research Center, CODA-CERVA-VAR, Groeselenberg
99, B-1180 Ukkel, Belgium

b Ghent University, Faculty of Veterinary Medicine, Department of Pathology,
Bacteriology and Poultry Diseases, Salisburylaan 133, 9820 Merelbeke,
Belgium

c University College KaHo Sint-Lieven, Association Catholic University
Leuven, Department of Agro- and Biotechnology, Hospitaalstraat 23, 9100
Sint-Niklaas, Belgium

Received 28 October 2009; revised 24 December 2009; accepted 28 December
2009. Available online 11 January 2010.

Abstract Methicillin-resistant Staphylococcus aureus (MRSA) is infrequently
reported in mastitis. Yet, as in many other countries, the prevalence of
methicillin resistance among S. aureus from mastitis is currently unknown in
Belgium.

To elucidate this, the presence of mecA was investigated in 118 S. aureus
strains originating from diagnostic mastitis milk samples from 118 different
farms experiencing S. aureus mastitis. MRSA strains were characterized by
disk diffusion susceptibility testing, spa-typing, MLST and SCCmec-typing.
In an additional study, four MRSA-positive farms were selected to assess the
in-herd prevalence of MRSA, by sampling all cows in lactation. Isolated MRSA
strains were similarly characterized.

The mecA gene was detected in 11 (9.3%) of the 118 S. aureus isolates,
indicating that nearly 10% of the Belgian farms suffering from S. aureus
mastitis have an MRSA problem. The in-herd prevalence varied between 0% and
7.4%. Characterization of the MRSA strains showed that they were all
resistant to tetracycline. Additional resistances to macrolides,
lincosamides and aminoglycosides were frequently detected. The strains were
ST398, spa-types t011 or t567 and had SCCmec-type IVa or V, proving that
they belong to the emerging livestock-associated MRSA (LA-MRSA) strains of
CC398.

Our study shows that after detection in Belgian pigs, horses and poultry,
LA-MRSA has also attained Belgian cattle. It is the first report on frequent
isolation of LA-MRSA from bovine infections. As the in-herd isolation rate
resembles that of regular S. aureus in farms experiencing S. aureus
mastitis, the multi-resistance of LA-MRSA strains may cause future treatment
problems.

Keywords: Methicillin-resistant Staphylococcus aureus; MRSA; Mastitis;
Belgium; ST398; Multidrug resistance


http://www.sciencedirect.com/


High occurrence of methicillin-resistant Staphylococcus aureus ST398 in
equine nasal samples

A. Van den Eedea, , , A. Martensa, U. Lipinskab, M. Struelensc, A. Deplanoc,
O. Denisc, F. Haesebrouckb, F. Gasthuysa and K. Hermansb

aDepartment of Surgery and Anaesthesiology of Domestic Animals, Ghent
University, Faculty of Veterinary Medicine, Salisburylaan 133, B-9820
Merelbeke, Belgium

bDepartment of Pathology, Bacteriology and Poultry Diseases, Ghent
University, Faculty of Veterinary Medicine, Salisburylaan 133, B-9820
Merelbeke, Belgium

cLaboratoire de Référence MRSA-Staphylocoques, Department of Microbiology,
Université Libre de Bruxelles, Hôpital Erasme, Route de Lennik 808, B-1070
Brussels, Belgium

Received 30 March 2008; revised 23 June 2008; accepted 26 June 2008.
Available online 5 July 2008.

Abstract Methicillin-resistant Staphylococcus aureus (MRSA) infections do
occur in equine patients. Little is known, however, about their origin and
the general equine MRSA colonization status. In West European horses in
particular, neither the colonization rate nor the present strains or their
antimicrobial susceptibility patterns are known.

In the present study, a sample of 110 (Belgian, French, Dutch and Luxemburg)
horses presented at a Belgian equine clinic was screened for nasal MRSA
carriage. An indirect culturing protocol using a 0.001% colistin and
nalidixic acid containing broth was compared to a direct agar method.
Phenotypic identification following growth on a chromogenic MRSA screening
agar (ChromIDT MRSA) was combined with genotypic analysis (PCR, PFGE,
SCCmec, spa, and MLST typing). Antimicrobial susceptibility was tested
through disk diffusion.

Twelve (10.9%) horses carried MRSA, with the enrichment protocol resulting
in a significantly higher isolation rate. None of the isolated strains were
typeable through SmaI PFGE. They all harboured SCCmec type IVa or V and
belonged to spa type t011 or t1451 of the ST398 lineage. All isolates were
tetracycline resistant and sulfonamide and enrofloxacin susceptible.
Macrolide, lincosamide, trimethoprim and aminoglycoside susceptibility
varied and in total five different antimicrobial resistance patterns were
distinguished.

These results show that ST398 is certainly present in West European horses.
Due to its known interspecies transmission and the structure of the equine
industry, the presence of this clone in horses poses a substantial health
hazard for both animals and humans.

Keywords: Staphylococcus aureus; MRSA; Horse; Nasal colonization, ST398


http://www.sciencedirect.com/



Veterinary Microbiology Volume 141, Issues 1-2, 24 February 2010, Pages
96-102

Methicillin-resistant Staphylococcus aureus in horses and horse personnel:
An investigation of several outbreaks

E. van Duijkerena, , , M. Molemanb, M.M. Sloet van
Oldruitenborgh-Oosterbaanb, J. Multema, A. Troelstrac, A.C. Fluitc, W.J.B.
van Wameld, D.J. Houwersa, A.J. de Neelinge and J.A. Wagenaara, f

a Department of Infectious Diseases and Immunology, Faculty of Veterinary
Medicine, PO Box 80165, 3508 TD Utrecht, Utrecht University, The Netherlands

b Department of Equine Medicine, Faculty of Veterinary Medicine, Utrecht
University, The Netherlands

c Department of Medical Microbiology, University Medical Center Utrecht,
Utrecht University, The Netherlands

d Department of Medical Microbiology and Infectious Diseases, Erasmus
Medical Center, Rotterdam, The Netherlands

e National Institute of Public Health and the Environment, Laboratory for
Infectious Diseases and Screening, Bilthoven, The Netherlands

f Central Veterinary Institute of Wageningen UR, Lelystad, The Netherlands

Received 29 May 2009; revised 9 July 2009; accepted 3 August 2009. Available
online 8 August 2009.

Abstract

At the Veterinary Microbiological Diagnostic Center, the Netherlands, the
percentage of methicillin-resistant Staphylococcus aureus (MRSA) isolates
found in equine clinical samples increased from 0% in 2002 to 37% in 2008.
MRSA of spa-type t064, belonging to MLST ST8 and spa-types t011 and t2123,
both belonging to the livestock-associated MLST ST398, predominated.

During an outbreak of post-surgical MRSA infections in horses at a
veterinary teaching hospital in 2006/2007, MRSA isolates of spa-type t2123
were cultured from 7 horses and 4/61 personnel which indicated zoonotic
transmission. After intervention the outbreak stopped. However, another
outbreak occurred in 2008, where 17 equine MRSA isolates of spa-type t011 (n
= 12), t2123 (n = 4), and t064 (n = 1) were found. This time, 16/170
personnel were positive for MRSA with spa-type t011 (n = 11) and t2123 (n =
5). Personnel in close contact with horses were more often MRSA-positive
(15/106) than those without (1/64).

Screening of horses upon admission showed that 9.3% were MRSA-positive
predominantly with spa-type t011. Weekly cross-sectional sampling of all
hospitalized horses for 5 weeks showed that 42% of the horses were
MRSA-positive at least once, again predominantly with spa-type t011, which
suggests that nosocomial transmission took place. Fifty-three percent of the
environmental samples were MRSA-positive, including samples from students'
and staff members' rooms, and all were spa-type t011. This indicates that
humans contribute to spreading the organism. Culturing of samples employing
high-salt pre-enrichment performed better than a comparable method without
pre-enrichment.

Our results show that nosocomial transmission occurs in equine clinics and
suggests that personnel play a role in the transmission.

Keywords: Horse; MRSA; Staphylococcus aureus; Transmission; Environment


http://www.sciencedirect.com/


Preventive Veterinary Medicine Volume 91, Issues 2-4, 1 October 2009, Pages
270-273

Short communication Occurrence of methicillin-resistant Staphylococcus
aureus in rats living on pig farms

A.W. van de Giessen, a, , M.G. van Santen-Verheuvela, P.D. Hengevelda, T.
Boscha, E.M. Broensa and C.B.E.M. Reuskena

aCentre for Infectious Disease Control Nertherlands, National Institute for
Public Health and the Environment, Bilthoven, The Netherlands

Received 20 March 2009; revised 8 May 2009; accepted 8 May 2009. Available
online 11 June 2009.

Abstract In The Netherlands, MRSA ST398 has emerged in hospitals and human
carriers have been associated with exposure to pigs and cattle. High
prevalences of MRSA ST398 in pigs and pig farmers have been determined and
the transmission routes of MRSA on pig farms need to be elucidated. In the
south of the Netherlands, in recent years, the black rat (Rattus rattus) has
emerged as a prominent rodent on livestock farms. From March till May 2008,
a survey on MRSA in rats living on livestock farms in the south of The
Netherlands and the north of Belgium was conducted. In total, 40 black rats
(R. rattus) and 3 brown rats (Rattus norvegicus) were collected on 12 farms
including five pig farms, five poultry farms, one mixed pig and veal farm
and one goat farm. MRSA ST398 was detected in black rats captured at two of
the five pig farms as well as in a black rat living on the mixed pig and
veal farm. From one black rat captured at another pig farm MRSA ST 97 was
isolated. Considering the behaviour of rats on livestock farms, it is
concluded that rats might play a role in the spread and persistence of MRSA
on pig farms.

Keywords: Staphylococcus aureus; Methicillin resistance; Swine;
Transmission; Rats; Rodents

Article Outline


http://www.sciencedirect.com/


JAC Advance Access originally published online on October 21, 2009 Journal
of Antimicrobial Chemotherapy 2009 64(6):1325-1326; doi:10.1093/jac/dkp378


© The Author 2009. Published by Oxford University Press on behalf of the
British Society for Antimicrobial Chemotherapy. All rights reserved. For
Permissions, please e-mail: [email protected]

--------------------------------------------------------------------------------

Research letters

Detection of methicillin-resistant Staphylococcus aureus ST398 in food
samples of animal origin in Spain Carmen Lozano, María López, Elena
Gómez-Sanz, Fernanda Ruiz-Larrea, Carmen Torres and Myriam Zarazaga*
Departamento de Agricultura y Alimentación, Universidad de La Rioja, Madre
de Dios 51, 26006 Logroño, Spain

--------------------------------------------------------------------------------

* Corresponding author. Tel: +34-941-299751; Fax: +34-941-299721; E-mail:
[email protected] Keywords: MRSA , food microbiology , ST398 ,
ST125 , ST217


Sir,

Methicillin-resistant Staphylococcus aureus (MRSA) strains belonging to
clonal lineage sequence type (ST) 398 are being reported at an increasing
frequency in Europe.1 This new MRSA type has been isolated from colonized
and infected animals and humans, and also from meat in some countries,1,2
representing a risk to human health; nevertheless, so far, no data about
detection of MRSA ST398 in food in Spain have been published.


http://jac.oxfordjournals.org/cgi/conte ... /64/6/1325



doi:10.1016/j.ijfoodmicro.2008.12.007 | How to Cite or Link Using DOI
Copyright © 2008 Elsevier B.V. All rights reserved.


Prevalence of methicillin-resistant Staphylococcus aureus in meat


E. de Boera, , , J.T.M. Zwartkruis-Nahuisa, B. Wita, X.W. Huijsdensc, A.J.
de Neelingc, T. Boschc, R.A.A. van Oosteromb, A. Vilaa and A.E. Heuvelinka

aFood and Consumer Product Safety Authority (VWA), PO Box 202, 7200 AE
Zutphen, The Netherlands

bFood and Consumer Product Safety Authority (VWA), PO Box 19506, 2500 CM Den
Haag, The Netherlands

cNational Institute for Public Health and the Environment (RIVM), PO Box 1,
3720 BA Bilthoven, The Netherlands

Received 13 August 2008; revised 18 November 2008; accepted 7 December 2008.
Available online 13 December 2008.

Abstract Recently the isolation of methicillin-resistant Staphylococcus
aureus (MRSA) strains from several food-producing animals has been reported.
During slaughtering of MRSA-positive animals, contamination of carcasses
with MRSA may occur and consequently the meat of these animals may get
contaminated. The aim of this study was to estimate the prevalence of MRSA
in raw meat samples from the retail trade.

Samples of raw beef, pork, veal, lamb/mutton, chicken, turkey, fowl and game
were collected from the retail trade. A detection method including a
two-step enrichment in Mueller-Hinton broth + 6.5% NaCl and phenol red
mannitol broth containing ceftizoxime and aztreonam, followed by isolation
on MRSA ID agar (bioMérieux) was evaluated and subsequently applied for the
detection of MRSA in samples of raw meats.

MRSA strains were isolated from 264 (11.9%) of 2217 samples analyzed.
Isolation percentages for the meat species were: beef (10.6%), veal (15.2%),
lamb and mutton (6.2%), pork (10.7%), chicken (16.0%), turkey (35.3%), fowl
(3.4%) and game (2.2%). The majority (85%) of the isolated strains belonged
to spa-types of pulsed-field gel electrophoresis (PFGE) non-typeable
(NT)-MRSA, corresponding to the multilocus sequence type ST398, a type also
recently isolated in the Netherlands from pigs. However, a smaller part of
these strains were found to be of other ST's, possibly of human origin.

Further studies are needed to elucidate transmission routes of MRSA in
relation to meat and other foods and to provide the tools for preventing the
spread of MRSA. At present the high prevalence of MRSA in meat has not been
shown to contribute significantly to the dissemination of MRSA to humans and
the possible health hazard for consumers of the presence of MRSA in foods
should be further elucidated.

Keywords: MRSA; Meat; MLST; spa-Typing


http://www.sciencedirect.com/


Thursday, February 11, 2010

Denmark's Case for Antibiotic-Free Animals NEW YORK, Feb. 10, 2010

snip...

According to one study, when different countries introduced certain
antibiotics on farms, a surge occurred in people contracting antibiotic
resistant intestinal infections one to two years later. One infection,
Campylobacter, increased 20 percent in Denmark and 70 percent in Spain.

After the ban, a Danish study confirmed that removing antibiotics from farms
drastically reduced antibiotic-resistant bacteria in animals and food.

Danish scientists believe if the U.S. doesn't stop pumping its farm animals
with antibiotics, drug-resistant diseases in people will only spread.

"It's not going to be a time bomb that goes off like this," said Dr. Frank
Aarestrup, of the Danish Food Institute at the University of Denmark. "It's
something that's slowly getting more and more complicated, more difficult
for us to actually treat infections.

Rep. Slaughter's "Preservation of Antibiotics for Medical Treatment Act"

Some American food producers agree.

"It's just gone too far," said Stephen McDonnell, CEO Applegate Farms.

snip...see full text ;



http://staphmrsa.blogspot.com/2010_02_01_archive.html




Wednesday, February 10, 2010

NAIS MAD COW TRACEABILITY DUMPED BY USDA APHIS 2010


http://naiscoolyes.blogspot.com/2010/02 ... ed-by.html




Sunday, February 14, 2010


[Docket No. FSIS-2006-0011] FSIS Harvard Risk Assessment of Bovine
Spongiform Encephalopathy (BSE)



http://bseusa.blogspot.com/2010/02/dock ... rvard.html





Terry S. Singeltary Sr.
P.O. Box 42
Bacliff, Texas USA 77518
 

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