Sources in China reported the presence of a virulent strain of Avian Flu in the northeastern province of Liaoning in April. The H5N6 strain was detected in wild birds at a forest park, with 11 dead by the disease. In an effort to prevent the spread of H5N6, some 280 birds were culled. Previously, H5N6 was found present in a poultry farm in Sichuan.

https://www.reuters.com/world/asia-pacific/china-reports-h5n6-avian-flu-wild-birds-liaoning-2021-04-12/?fbclid=IwAR121FWJk_J39givlYPg2k6pJKctusGWMG-mEXPzdFtmwVHuA68qD2Cpt6Y