prevalence of igg antibodies against west nile virus in blood donors during the 2003 outbreak in tunisia.this study aimed to evaluate the prevalence of anti-west nile virus (wnv) igg among two populations of tunisian blood donors living in areas where human outbreaks of wnv have occurred. cohorts a (monastir) and b (mahdia) included 742 and 102 blood donors respectively. sera were tested by igg elisa test and results were confirmed by prnt test. wnv neutralizing antibodies were detected in 32 (4.3%) and in 14 (13.7%) sera in cohorts a and b respectively. the prevalence of anti-wnv igg was significa ...201020356614
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