This disease is a type of bestiality in which the suffer actually feels attracted to monkeys. This disease has many dangerous side effects such as monkey blow jobs, making-out with monkeys, naked showers with monkeys, or in extreme cases monkey sex. This can lead to all kinds of problems such as AIDS, planet of the apes syndrome, or extreme social isolation.
Dude Josh just fucked the monkey! His zoo fever really took hold of him after a few shots of vodka. I just hope he doesn't have AIDS now.