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Health & Nutrition
IBR Abortion Storm in Naive Herd
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<blockquote data-quote="inyati13" data-source="post: 993449" data-attributes="member: 17767"><p>I have used Bovi-Shield Gold FP 5 L5 by pfizer (MLV for IBR) on heifers that were weaned and separated from the other cows. I had the same concern because this has been a topic on Cattle Today. What vaccine did you use? I would be very interested to know. Pfizer states that the MLV could result in an abortion if it is given to a pregnant cow that had NOT previously been exposed to the MLV or giving it to a calf that is still nursing a pregnant cow where the cow had NOT previously been exposed to the MLV. You certainly have to consider the possibility that the MLV vaccine caused your outbreak but that would be tough to demonstrate. I would call the drug company and see what they say. I was concerned when I used the MLV since the virus is still alive but modified to be non-virulent. The process could be imperfect enough to allow a few virulent organisms to slip through. If Lucky_P (Veterinarian Pathologist) reads this thread, this may be right up his alley. I would appreciate hearing what you find out. Thanks.</p><p></p><p>PS If you want to call Pfizer and you are in the USA 800-366-5288, This is for their animal health service.</p></blockquote><p></p>
[QUOTE="inyati13, post: 993449, member: 17767"] I have used Bovi-Shield Gold FP 5 L5 by pfizer (MLV for IBR) on heifers that were weaned and separated from the other cows. I had the same concern because this has been a topic on Cattle Today. What vaccine did you use? I would be very interested to know. Pfizer states that the MLV could result in an abortion if it is given to a pregnant cow that had NOT previously been exposed to the MLV or giving it to a calf that is still nursing a pregnant cow where the cow had NOT previously been exposed to the MLV. You certainly have to consider the possibility that the MLV vaccine caused your outbreak but that would be tough to demonstrate. I would call the drug company and see what they say. I was concerned when I used the MLV since the virus is still alive but modified to be non-virulent. The process could be imperfect enough to allow a few virulent organisms to slip through. If Lucky_P (Veterinarian Pathologist) reads this thread, this may be right up his alley. I would appreciate hearing what you find out. Thanks. PS If you want to call Pfizer and you are in the USA 800-366-5288, This is for their animal health service. [/QUOTE]
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