Review on Infections of the Central Nervous System by St. Louis Encephalitis, Rocio and West Nile Flaviviruses in Brazil, 2004-2014Report as inadecuate




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Rocio ROCV,Saint Louis encephalitis SLEV and West Nile WNV are FlavivirusFlaviviridae probably carried by birds and transmitted by Culex mosquitoes. We show here a reviewon infections of the central nervous system by St. Louis Encephalitis, Rocioand West Nile Flaviviruses in Brazil, 2004-2014. In the last 10 years,serologic surveys in horses showed high proportions of seropositive animalswhich point out that SLEV and ROCV have circulated infecting horses in west-central,southeast and other regions of Brazil and that WNV has been introduced intoBrazil and circulates mostly in Pantanal region. However humans infected by WNVhave not been reported. In the State of Sao Paulo: SLEV was isolated from acase clinically diagnosed as dengue in 2004; in 2006, 6 SLEV patients including3 cases of menigoencephalitis were reported in the middle of a large epidemicof dengue type 3; and in 2008, 1 patient with acute febrile illness that wasIgM-positive for dengue was found infected by SLEV by detection of the virusgenome. In 2010, ROCV genome was detected in the cerebrospinal fluids of 2patients from the northern region with meningoenchephalitis and also AIDS. Thiswas the first report of infections by ROCV in the last 34 years and curiously,it occured more than 2000 km from where the virus was firstly found. It isnecessary to improve the surveillance of SLEV, ROCV and WNV in Brazil.

KEYWORDS

Rocio Virus, Saint Louis Encephalitis Virus, West Nile Virus, Brazil

Cite this paper

Figueiredo, M. and Figueiredo, L. 2014 Review on Infections of the Central Nervous System by St. Louis Encephalitis, Rocio and West Nile Flaviviruses in Brazil, 2004-2014. Advances in Microbiology, 4, 955-961. doi: 10.4236-aim.2014.413106.





Author: Mario Luis Garcia de Figueiredo, Luiz Tadeu Moraes Figueiredo

Source: http://www.scirp.org/



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