Caused by a Lentivirus in the *Retroviridae* family. Same as the virus that causes AIDS in humans. > Currently in the United States, all horses that test positive must be reported to federal authorities by the testing laboratory. EIA-positive horses are infected for life. Options for the horse include sending the horse to a recognized research facility, branding the horse and quarantining it at least 200 yards from other horses for the rest of its life, and euthanizing the horse. Very few quarantine facilities exist, which usually leads to the option of euthanizing the horse. Ok, so there are three options for this, and most of the options lead to euthanasia due to lack of space at research facilities or proper quarantine. > The horse industry and the veterinary industry strongly suggest that the risks posed by infected horses, even if they are not showing any clinical signs, are enough of a reason to impose such stringent rules. Ok. So ... even if the horse isn't sick, it can transmit the disease. Just like AIDS. So why aren't faggots being euthanized?