Superinfection exclusion studies using West Nile virus and Culex flavivirus strains from Argentina

In Argentina, many Flavivirus were recognised including West Nile virus (WNV). During 2009 several strains of Culex Flavivirus (CxFV), an insect-specific flavivirus, were isolated in the same region where circulation of WNV was detected. Hence, the objective of this study was to analyse the effect o...

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Published in:Memórias do Instituto Oswaldo Cruz Vol. 115; p. e200012
Main Authors: Goenaga, Silvina, Goenaga, Julieta, Boaglio, Estefanía Raquel, Enria, Delia Alcira, Levis, Silvana del Carmen
Format: Journal Article
Language:English
Published: Instituto Oswaldo Cruz, Ministério da Saúde 01-01-2020
Fundação Oswaldo Cruz (FIOCRUZ)
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Summary:In Argentina, many Flavivirus were recognised including West Nile virus (WNV). During 2009 several strains of Culex Flavivirus (CxFV), an insect-specific flavivirus, were isolated in the same region where circulation of WNV was detected. Hence, the objective of this study was to analyse the effect of co-infection in vitro assays using CxFV and WNV Argentinean strains in order to evaluate if CxFV could affect WNV replication. Our results showed that WNV replication was suppressed when multiplicity of infection (MOI) for CxFV was 10 or 100 times higher than WNV. Nevertheless, in vivo assays are necessary in order to evaluate the superinfection exclusion potential.
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SG, DE and SL conceived and designed the experiments; SG and EB performed the experiments; SG and JG analysed the data and interpreted results; SG wrote the manuscript; SL interpreted results and reviewed the paper. All authors reviewed and approved the final version. The authors declare no conflict of interest.
ISSN:0074-0276
1678-8060
1678-8060
DOI:10.1590/0074-02760200012