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==Description==
 
==Description==
 
Bovine Imunodeficiency Virus (BIV) is a Lentivirus (non-oncogenic) which causes a persistent viral infection in cattle worldwide. It was first isolated in 1969 from a cow with a wasting syndrome.
 
Bovine Imunodeficiency Virus (BIV) is a Lentivirus (non-oncogenic) which causes a persistent viral infection in cattle worldwide. It was first isolated in 1969 from a cow with a wasting syndrome.
 
==Pathogenesis==
 
==Pathogenesis==
The mechanism of transfer is not well knonw,but the following posibilites are being researched :
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The mechanism of transfer is not well known,but the following possibilites are being researched :
 
* Transplacental
 
* Transplacental
 
* Transmammary
 
* Transmammary
* Vertical transfer through infected Semenn (e.g. Artificial inseminatio)
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* Vertical transfer through infected Semenn (e.g. Artificial insemination)
 
==Clinical Signs==
 
==Clinical Signs==
 
Bovine immunodeficiency Virus is not associated with a specific disease in cattle but has been associated with the folowing signs:
 
Bovine immunodeficiency Virus is not associated with a specific disease in cattle but has been associated with the folowing signs:
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