RESUMEN

Seasonal dynamics of influenza A viruses (IAVs) are driven by host density and population immunity. Through an analysis of subtypic data for IAVs isolated from Blue-winged Teal (Anas discors), we present evidence for seasonal patterns in the relative abundance of viral subtypes in spring and summer/autumn.

Asunto(s)

Anseriformes , Virus de la Influenza A/clasificación , Gripe Aviar/virología , Estaciones del Año , Animales , Canadá/epidemiología , Guatemala/epidemiología , Estados Unidos/epidemiología