China reported an outbreak of H5N1 bird flu at a farm in northwest Qinghai province, the Paris-based World Organization for Animal Health said, citing a report from the Chinese agriculture ministry.
It is the first case of the H5N1 strain of flu to be reported on a Chinese poultry farm since 2014.
But the virus has been reported in Nepal and Bhutan this year, both countries that share borders with China's northwest.
The virus killed 1,050 broiler chickens out of a flock of 1,615 at a farm in the Haixi Mongolian and Tibetan autonomous prefecture. The remaining birds were killed and disposed of, the ministry said.
Some strains of the often lethal H5N1 virus can be transmitted to humans. The case is the sixth case of highly pathogenic bird flu reported by China this year, compared with just four cases reported to the animal health organization in 2017.
Most of the cases reported in China this year have been a form of H7N9, the same strain that killed hundreds of people in China last year, hitting consumer demand and the egg and broiler industries.
