Caprine arthritis encephalitis virus license to practice medicine in the United States. He told Sheen to stop taking his anti-retroviral medications, despite the dangers. Chachoua illegally administered his own treatment, which included goat's milk from an area in Mexico where many goats are infected with CAEV. Chachoua claimed that Sheen's therapeutic side effects disappeared after he administered his "alternative" therapy, and that Sheen became "HIV-negative". Later tests found that Sheen was still HIV-positive. Caprine arthritis encephalitis virus Caprine arthritis encephalitis virus (CAEV) is a retrovirus which infects goats and cross-reacts immunologically with HIV, due to being from the same family of viruses. CAEV cannot
Pack animal Pack animal A pack animal or beast of burden is an individual or type of working animal used by humans as means of transporting materials by attaching them so their weight bears on the animal's back, in contrast to draft animals which pull loads but do not carry them. Traditional pack animals are diverse including camels, goats, yaks, reindeer, water buffaloes, and llamas as well as the more familiar pack animals like horses, donkeys and mules. The term "pack animal" is traditionally used in contrast to "draft animal", which is a working animal that typically pulls a load behind itself