Three Cases Infected with Avian Influenza A(H5N6) Virus - Chongqing Municipality, China, January-September, 2021

In case of unexplained pneumonia or severe respiratory infection, the patients' epidemiological history of contact with poultry or live poultry markets (LPMs) may be an important interrogation to help diagnose. Extensive and long-term surveillance of avian influenza viruses in LPMs is essential.