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Short report: serological evidence of West Nile virus activity in El Salvador |
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| Authors: | Cruz Lilian Cardenas Victor M Abarca Mauricio Rodriguez Tito Reyna Roberto Flores Serpas Mario V Fontaine Robert E Beasley David W C Da Rosa Amelia P A Travassos Weaver Scott C Tesh Robert B Powers Ann M Suarez-Rangel Gloria |
| Affiliation: | Field Epidemiology Training Program, Ministry of Public Health and Social Welfare, San Salvador, El Salvador. |
| Abstract: | Epizootics of encephalitis in El Salvador killed 203 equines between November 2001 and April 2003. During an investigation of the outbreaks, 18 (25%) of 73 serum samples collected from stablemates of deceased animals in 2003 had antibodies to West Nile virus. Ten of these infections were confirmed by plaque reduction neutralization tests, suggesting West Nile virus has extended its range and spread to Central America. |
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