Introduction of Aedes albopictus into a La Crosse Virus—Enzootic Site in Illinois

摘要

In late summer and fall 1997, Aedes albopictus mosquitoes were found in Peoria, Illinois, a long recognized focus of La Crosse virus transmission. Larvae were found in tires and other artificial containers, biting adults were recovered, and eggs were collected in oviposition traps within a 25-ha area. One chipmunk trapped <0.25 km from the infested area tested positive for neutralizing antibodies against La Crosse virus.