The caprine arthritis-encephalitis virus is an RNA virus belonging to the family Retroviridae, genus Lentivirus, which affects goats. Once the animal is infected, the virus remains active indefinitely, causing a disease that occurs with arthritis, pneumonia and encephalitis in adult animals and with involvement of the central nervous system in kids, which causes difficulty walking (ataxia ) and partial paralysis (paresis). The virus has worldwide distribution and is a major problem for livestock farms. Other Lentivirus
The caprine arthritis-encephalitis virus is related to other viruses of the genus lentivirus that affect different species:
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