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anaplas question
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<blockquote data-quote="Lucky_P" data-source="post: 1473588" data-attributes="member: 12607"><p>Simple answer is... yes, those calves are potentially a source of infection. </p><p>Calves are NOT resistant to infection... they just don't develop clinical disease, because their hematopoietic(blood-cell producing) system is in full-on mode, as they're growing - building bone and muscle. But, they can and do become infected, and will remain inapparent carriers for life... so, when fed upon by ticks, they provide the inoculum that the ticks then amplify and spread to naive herd members. </p><p>You could blood-test these calves; if they're infected, they'll be seropositive on the cELISA test; if negative, then they are not infected.</p><p></p><p>With the exception of the Anaplasma strains present in FL and CA, biting flies are a very minor route of transmission - it's vectored from animal to animal primarily by ticks.</p><p>It is, also, quite readily transmitted by reusing needles... small-scale study at KSU... cow with anaplas at the level of 1% red blood cell infection... they stuck a needle in her, then in the cow behind her; rinse, repeat. 6 of 10 test cows became infected.</p></blockquote><p></p>
[QUOTE="Lucky_P, post: 1473588, member: 12607"] Simple answer is... yes, those calves are potentially a source of infection. Calves are NOT resistant to infection... they just don't develop clinical disease, because their hematopoietic(blood-cell producing) system is in full-on mode, as they're growing - building bone and muscle. But, they can and do become infected, and will remain inapparent carriers for life... so, when fed upon by ticks, they provide the inoculum that the ticks then amplify and spread to naive herd members. You could blood-test these calves; if they're infected, they'll be seropositive on the cELISA test; if negative, then they are not infected. With the exception of the Anaplasma strains present in FL and CA, biting flies are a very minor route of transmission - it's vectored from animal to animal primarily by ticks. It is, also, quite readily transmitted by reusing needles... small-scale study at KSU... cow with anaplas at the level of 1% red blood cell infection... they stuck a needle in her, then in the cow behind her; rinse, repeat. 6 of 10 test cows became infected. [/QUOTE]
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