Ilheus and Saint Louis encephalitis viruses elicit cross-protection against a lethal Rocio virus challenge in mice.

Autor: Alberto Anastacio Amarilla, Marcilio Jorge Fumagalli, Mario Luis Figueiredo, Djalma S Lima-Junior, Nilton Nascimento Santos-Junior, Helda Liz Alfonso, Veronica Lippi, Amanda Cristina Trabuco, Flavio Lauretti, Vanessa Danielle Muller, David F Colón, João P M Luiz, Andreas Suhrbier, Yin Xiang Setoh, Alexander A Khromykh, Luiz Tadeu Moraes Figueiredo, Victor Hugo Aquino
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: PLoS ONE, Vol 13, Iss 6, p e0199071 (2018)
Druh dokumentu: article
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0199071
Popis: Rocio virus (ROCV) was the causative agent of an unprecedented outbreak of encephalitis during the 1970s in the Vale do Ribeira, Sao Paulo State, in the Southeast region of Brazil. Surprisingly, no further cases of ROCV infection were identified after this outbreak; however, serological surveys have suggested the circulation of ROCV among humans and animals in different regions of Brazil. Cross-protective immunity among flaviviruses is well documented; consequently, immunity induced by infections with other flaviviruses endemic to Brazil could potentially be responsible for the lack of ROCV infections. Herein, we evaluated the cross-protection mediated by other flaviviruses against ROCV infection using an experimental C57BL/6 mouse model. Cross-protection against ROCV infection was observed when animals had prior exposure to Ilheus virus or Saint Louis encephalitis virus, suggesting that cross-reactive anti-flavivirus antibodies may limit ROCV disease outbreaks.
Databáze: Directory of Open Access Journals
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