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Anaplasmosis season is here.
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<blockquote data-quote="Lucky_P" data-source="post: 1163179" data-attributes="member: 12607"><p>Principally tick-vectored strains in this part of the country - but I still see/hear veterinarians in the area telling their clients it's spread by horseflies - and while they <u>can</u> act as a mechanical vector, their role is pretty minimal, compared to the ticks amplifying and spreading it. </p><p>Additionally, I still hear veterinarians incriminating whitetail deer as a source, but surveys of free-ranging WTD - and infection studies in captive WTD do not bear them out as effective hosts.</p><p></p><p>No live vaccine allowed here, Ken - though I think perhaps California does allow it. We'll occasionally encounter a herd with <em>Theileria buffeli</em> infection - usually an incidental finding - but I've read papers where some of the <em>Theileria</em> species are used as a live vaccine in some parts of the world to diminish morbidity/mortality due to <em>A.marginale</em> infection.</p><p>Currently know of a number of folks who've had major losses to it in the past, who are now using the (inactivated <em>A.marginale</em>)Anaplasmosis Vaccine from University Products LLC in Baton Rouge - with good results. Doesn't prevent infection, but all but eliminates incidence of clinical disease. Vaccinates will test seropositive on cELISA test.</p><p>If it ever makes it onto my farm (knock on wood), I'll be vaccinating. </p><p>CTC-medicated minerals don't contain enough CTC to effectively control it during vector season, and I'm not going to be feeding a medicated feed daily during grazing season.</p><p></p><p>As Ron mentioned, movement of cattle from endemic to nonendemic areas has distributed it around pretty effectively. 20 years ago, there were specific 'hot spots' where I could count on cases coming from, but they now come from all over our service area.</p></blockquote><p></p>
[QUOTE="Lucky_P, post: 1163179, member: 12607"] Principally tick-vectored strains in this part of the country - but I still see/hear veterinarians in the area telling their clients it's spread by horseflies - and while they [u]can[/u] act as a mechanical vector, their role is pretty minimal, compared to the ticks amplifying and spreading it. Additionally, I still hear veterinarians incriminating whitetail deer as a source, but surveys of free-ranging WTD - and infection studies in captive WTD do not bear them out as effective hosts. No live vaccine allowed here, Ken - though I think perhaps California does allow it. We'll occasionally encounter a herd with [i]Theileria buffeli[/i] infection - usually an incidental finding - but I've read papers where some of the [i]Theileria[/i] species are used as a live vaccine in some parts of the world to diminish morbidity/mortality due to [i]A.marginale[/i] infection. Currently know of a number of folks who've had major losses to it in the past, who are now using the (inactivated [i]A.marginale[i][/i][/i])Anaplasmosis Vaccine from University Products LLC in Baton Rouge - with good results. Doesn't prevent infection, but all but eliminates incidence of clinical disease. Vaccinates will test seropositive on cELISA test. If it ever makes it onto my farm (knock on wood), I'll be vaccinating. CTC-medicated minerals don't contain enough CTC to effectively control it during vector season, and I'm not going to be feeding a medicated feed daily during grazing season. As Ron mentioned, movement of cattle from endemic to nonendemic areas has distributed it around pretty effectively. 20 years ago, there were specific 'hot spots' where I could count on cases coming from, but they now come from all over our service area. [/QUOTE]
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Anaplasmosis season is here.
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