Wildlife Health Bulletin: Winter 2021 Update on Highly Pathogenic Avian Influenza Viruses Circulating Globally in Wild Birds
USGS National Wildlife Health Center
Wildlife Health Bulletin 2021-03
- Multiple strains of highly pathogenic avian influenza viruses have been detected globally in wild birds and poultry in 2021.
- The apparent increase in virus activity noted during the fall migration period warrants increased vigilance by North American wildlife health professionals.
- Wildlife managers can contact the USGS National Wildlife Health Center (NWHC) to report wildlife mortality events and to discuss submitting carcasses for diagnostic evaluation.