Four humans developed antibodies but did not get sick.[50] 1992 Italy RESTV 0 0 RESTV was introduced into quarantine facilities in Siena by monkeys imported from the same facility in the Philippines as the 1989 and 1990 US outbreaks. No human cases.[51] 1994 Côte d'Ivoire[note 5] TAFV 1 0 First and thus far only recognition of TAFV.