| serological evidence of h7, h5 and h9 avian influenza virus co-infection among herons in a city park in jiangxi, china. | extensive surveillance of influenza a viruses in different avian species is critical for understanding its transmission. here, a breeding colony of little egrets and black-crowned night herons was monitored both serologically and virologically in a city park of jiangxi in 2009. a portion of herons had antibodies against h7 (52%), h5 (55%) and h9 (6%) subtype avian influenza virus (aiv) in egg yolk samples, and 45% had antibodies against different aiv serotypes (h5, h7 or h9) simultaneously. grea ... | 2014 | 25242001 |