| USA-147 | St. Jude Children's Research Hospital, University of Tennessee | Memphis | USA | AMRO | WHO Collaborating Centre for Studies on the Ecology of Influenza in Animals | ZHANG Wenqing | Active | Details |
| USA-118 | Centers for Disease Control and Prevention (CDC) | Atlanta | USA | AMRO | WHO Collaborating Centre for Surveillance, Epidemiology & Control of Influenza | ZHANG Wenqing | Active | Details |