The European Centre for Disease Prevention and Control (ECDC) recently confirmed sporadic human cases of avian influenza A (H9N2) have been observed in 2023, mainly in young children.
As of June 12, 2023, one new human infection with H9N2 was reported in Sichuan province, China.
And since 1998, a total of 125 laboratory-confirmed cases, including two deaths, of human infection with H9N2 viruses have been reported in eight countries: China (112), Egypt (4), Bangladesh (3), Cambodia (2), Oman (1), Pakistan (1), India (1), and Senegal (1).
Over the past year, various humans have been infected with different avian influenza viruses.
According to the Centers for Disease Control and Prevention, Avian influenza or bird flu is caused by infection with avian (bird) influenza (flu) Type A viruses.
And the Highly Pathogenic Avian Influenza (HPAI) strain of the H5N avian flu is currently spreading in the U.S.
In the U.S., the government has already authorized one bird-flu vaccine and invested in developing other vaccine candidates.