“…As indicated above, natural poxvirus infections of nonhuman primates do occur and have been reported in a variety of monkeys and apes: rhesus, cynomolgus, other macaques, chimpanzee, gorilla, and orangutan (104,118,235,270,271,347). Espafia (personal communication) described an outbreak of monkey pox in various species of monkeys, including a number heretofore not incriminated (Presbytis cristatus and M. nemestrina).…”