Effects of H9N2 avian influenza virus in Serinus waterslager canaries.

摘要

Twelve 5 month old waterslager canaries wereinoculated intranasally with heterologous low pathogenic H9N2 avian influenza virus. Viraltiters in tracheal and cloacal swabs were determined by TaqMan real time PCR. Clinical signs,replication and excretion time of the virus were then assessed. Five birds exhibiteddecreased activity, lethargy, ruffled feathers and decreased feed consumption. Viruses weredetected in tracheal swabs by day 3 and cloacal ones at day 4 post inoculation andmaximum titers at days 2 and 3 in same swabs. Virus was recovered from cloaca longercompared with tracheal virus. Clinical signs and excretion patterns suggest that a lowpathogenic H9N2 avian influenza virus can replicate in canaries inducing mild clinical signsand that it could play a role in the epidemiology of influenza affecting poultry and publichealth.