XINING, Aug. 31 (Xinhuanet) -- Qinghai Province in northwest China has lifted a three-month blockade to prevent an outbreak of migratory bird flu as no such cases have been reported for nearly two months, the provincial headquarters in charge of grave animal epidemic prevention and control said Wednesday.

    The Ministry of Agriculture ratified the lifting of the quarantine in the middle of the month in Gangca County and the adjacent migratory bird habitat, where the avian flu broke out in early May.

    The headquarters has been supervising the epidemic since then and assured Wednesday that no migratory birds have died of the virus in isolated regions for the past 56 days and the epidemic did not spread to poultry or humans, said Dang Chenyan, head of the provincial headquarters.

    The decision was made in compliance with the requirements for preventing and treating the highly pathogenic H5N1 avian flu virus, Dang said.

    Following the order from the Ministry of Agriculture, Qinghai sealed off several regions stricken by the epidemic on May 21 after an outbreak of the H5N1 avian flu on May 4. Hundreds of birds have died of the virus in the province so far.

    Xinjiang Uygur and Tibet Autonomous Regions in west China have also registered bird flu cases in June and August. Enditem