Figure. From: West Nile Virus, Venezuela.

Collection sites for West Nile virus (WNV) in Venezuela. Symbols represent results of tests for specific antibodies to WNV in serum samples of birds and horses (viral titers in a 90% plaque reduction neutralization test >40 and a 4-fold differential inhibition in a neutralization assay to WNV compared with other related flaviviruses). Source: Instituto Geográfico de Venezuela Simón Bolivar, Caracas, Venezuela.

Irene Bosch, et al. Emerg Infect Dis. 2007 April;13(4):651-653.

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