Surveillance of influenza viruses in waterfowl used as decoys in Andalusia, Spain.
- Estefanía Jurado-Tarifa
- Sebastian Napp
- Juan Manuel Gómez-Pacheco
- Manuel Fernández-Morente
- Juan Antonio Jaén-Téllez
- Antonio Arenas
- Ignacio García-Bocanegra
DOIAbstract
A longitudinal study was carried out to determine the seroprevalence of avian influenza viruses (AIVs) in waterfowl used as decoys in Andalusia, southern Spain. A total of 2319 aquatic birds from 193 flocks were analyzed before and after the hunting season 2011-2012. In the first sampling, 403 out of 2319 (18.0%, CI95%: 15.8-19.0) decoys showed antibodies against AIVs by ELISA. The AI seroprevalence was significantly higher in geese (21.0%) than in ducks (11.7%) (P<0.001). Besides, the spatial distribution of AIVs was not homogeneous as significant differences among regions were observed. The prevalence of antibodies against AIVs subtypes H5 and H7 were 1.1% and 0.3%, respectively, using hemagglutination inhibition test (HI). The overall an...
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