A “highly pathogenic” strain of the H5N1 bird flu has been reported in China’s Hunan province, Chinese officials said, according to a Saturday report from Reuters.

The outbreak was reported on a farm in the city of Shaoyang in the Hunan province, according to China’s Ministry of Agriculture and Rural Affairs. Of the 7,850 chickens on the farm where the outbreak occurred, 4,500 died of the H5N1 avian flu, Reuters reported.

The Chinese government said it culled 17,828 chickens as a result of the H5N1 outbreak, per Reuters.