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.
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Bovine Imunodeficiency Virus (BIV) is a Lentivirus (non-oncogenic), a genus of the ''Retroviridae'' family. It causes a persistent viral infection in cattle worldwide and was first isolated in 1969 from a cow with a wasting syndrome.
==Pathogenesis==
==Pathogenesis==
The mechanism of transfer is not well known,but the following possibilites are being researched :
The mechanism of transfer is not well known,but the following possibilites are being researched :