Avian H5N1 took a big leap about four years ago. Previously the virus, first detected in the mid-1990s, would tear through domesticated poultry, killing off flocks in days. It occasionally jumped to ...
BEIJING, Nov 27 (Reuters) - China reported an outbreak of highly pathogenic H5N8 bird flu in wild swans in northern Shanxi province, the agriculture ministry said late on Thursday. The disease killed ...