China killed 13,000 birds in northwest to control what it calls an epidemic of bird flu . 500 birds that died in Xinjiang Uygur Autonomous Region tested positive for H5N1 . China reported its first human-to-human infection case in 2005 . In late 2010 , China confirmed its sixth case of bird flu in a year . The virus has killed more than 100 people since 2003 .
China killed 13,000 birds in northwest to control what it calls an epidemic of bird flu . 500 birds that died in Xinjiang Uygur Autonomous Region tested positive for H5N1 . In late 2010 , China confirmed its sixth case of bird flu in a year . The virus has killed more than 100 people since 2003 .