TY - JOUR
AU - Forattini, Oswaldo, P.
AB - Abstract Rocio encephalitis is an epidemic flaviviral infection of man first described in São Paulo, Brazil, in 1975. Rocio virus has been isolated from arthropods collected in nature only once, and the vector relationships of the virus in Brazil are essentially unknown. We report here on the first vector competence studies undertaken with mosquito strains from the epidemic zone. Aedes scapularis F1 progeny from females collected during May, November, December, January, and February at Pariquera-Açu, Brazil, were susceptible to per os infection with Rocio virus. The ID50 [ca. 103.5 Vero cell plaque-forming units (PFU)] is well within the range of a competent vector. Infection and transmission rates of 100% were achieved when Ae. scapularis fed on a chick circulating 107.5 PFU/ml of virus; however, infection rates generally were lower. The susceptibility of Ae. scapularis to oral infection with Rocio virus, its ability to transmit virus experimentally, and its abundance and close association with man in the epidemic zone make this species a prime suspect as a vector during the 1975 and 1976 epidemics in São Paulo State. This content is only available as a PDF. Author notes 1 This study supported in part by Research Grant B/76/80/238/00/00 from Financiadora de Estudos e Projetos (FINEP), Brazil. © 1984 Entomological Society of America
TI - Experimental Transmission of Rocio Encephalitis Virus by Aedes Scapularis (Diptera: Culicidae) from the Epidemic Zone in Brazil
JF - Journal of Medical Entomology
DO - 10.1093/jmedent/21.1.34
DA - 1984-01-26
UR - https://www.deepdyve.com/lp/oxford-university-press/experimental-transmission-of-rocio-encephalitis-virus-by-aedes-nt4D07ikZM
SP - 34
EP - 37
VL - 21
IS - 1
DP - DeepDyve
ER -