Rabies in Marmosets (Callithrix jacchus), Ceará, Brazil

A new Rabies virus variant, with no close antigenic or genetic relationship to any known rabies variants found in bats or terrestrial mammals in the Americas, was identified in association with human rabies cases reported from the state of Ceara, Brazil, from 1991 to 1998. The marmoset, Callithrix jacchus jacchus , was determined to be the source of exposure.