Without any approved drugs, current Ebola treatment consists mainly of so-called supportive therapy, in which the patient is kept hydrated and symptoms including fever and other illnesses, like malaria, are treated. Thousands of drugs have been screened against the virus, in hopes that one or two would kill it. Probably hundreds of those show some effectiveness in a Petri dish, and many also work against the virus in small animals. "I've got shelves of things that protect mice and guinea pigs against Ebola," said UTMB’s Thomas Geisbert. But only two drugs have been shown to protect monkeys against the virus: ZMapp and TKM-Ebola.