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American Journal of Epidemiology Vol. 113, No. 2: 122-125
Copyright © 1981 by The Johns Hopkins University School of Hygiene and Public Health

other

EMERGENCE OF A NEW ARBOVIRUS DISEASE IN BRAZIL

III. ISOLATION OF ROCIO VIRUS FROM PSOROPHORA FEROX (HUMBOLDT, 1819)

OSCAR SOUZA DE LOPES1, LIA ABREU DE SACCHETTA1, D. BRUCE FRANCY2,, WERNER L. JAKOB1 and CHARLES H. CALISHER2

1Secao de Virus Transmitidos por Artropodos, in-stituto Adolfo Lutz Caixa Postal 7027, S{macron}o Paulo, Brazil
2Vector-Borne Diseases Division, Bureau of Laboratories, Center for Disease Control P.O. Box 2087, Fort Collins, CO 80522.

2Reprint requests to Dr. Francy.

Lopes O. S. L. A. Sacchetta, D. B. Francy (Vector-Borne Diseases Div., CDC, P.O. Box 2087, Fort Collins, CO 80522), W. L. Jakob and C. H. Calisher. Emergence of a new arbovirus disease In Brazil. III. Isolation of Rocio virus from Psorophora ferox (Humboldt, 1819). Am J Epidemiol 1981;113:122–5.

A newly described flavlvlrus was responsible for a large encephalitis epidemic in Sao Paulo State, Brazil. The etiologic agent, Rocio virus, was isolated from human patients and sentinel mice. The natural history of the virus is unknown although presumed to be arthropod-borne. Rocio virus was isolated from a single pool containing 19 Psorophora ferox of 47 pools (283 specimens) of this species tested. The positive pool contained 16 deplete, 2 gravid, and 2 engorged mosquitoes. No Isolations were made from 2183 pools of other species. The positive pool was collected during the year of the epidemic at the same approximate time and place where vertebrate isolations were made.

arboviruses; disease outbreaks; encephalitis; mosquitoes; virus diseases; zoonoses


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D. B. A. Medeiros, M. R. T. Nunes, P. F. C. Vasconcelos, G.-J. J. Chang, and G. Kuno
Complete genome characterization of Rocio virus (Flavivirus: Flaviviridae), a Brazilian flavivirus isolated from a fatal case of encephalitis during an epidemic in Sao Paulo state
J. Gen. Virol., August 1, 2007; 88(8): 2237 - 2246.
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