The United States has reported its first outbreak of H5N9 bird flu in poultry at a duck farm in California, according to the World Organisation for Animal Health (WOAH).

California Governor Gavin Newsom declared a state of emergency on Wednesday in response to increasing concerns about bird flu cases in the state. On the same day, the country's first severe case of the virus was reported in Louisiana, News.az reports citing Al Jazeera.

California Governor Gavin Newsom has declared a state of emergency in response to an outbreak of avian influenza A (H5N1), or bird flu, which has infected 34 people in the state.