日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

China could face problems trying to control bird flu this spring due to abnormally high seasonal temperatures, the country's vice agriculture minister said.

Related readings:  Vice-minister calls for vigilance over outbreaks   Indonesian woman dies of bird flu   Two birds suspected of being affected by H5 in HK   Bird migration monitoring to prevent bird flu outbreak   Indonesia signs bird flu vaccine deal   European farmers watch for flu   Hong Kong railway workers hold H5N1-virus prevention drills   Japan confirms deadly bird flu outbreak   Altering virus coats may halt flu spread

"First, the spring season is usually prone to bird flu. Second, as the average temperature in north and central China is higher than the past, migrant birds may stay longer within the borders of China," Yin Chengjie was quoted by the Xinhua News Agency as saying.

"We have successfully stopped the spread of bird flu from migrant birds in Qinghai and Tibet to human beings and domestic poultry. Now, we need to intensify monitoring of bird migration and be on high alert," he said in comments seen on Tuesday.

An expected increase in the transport of animals over the traditional Lunar New Year period, which starts this weekend, means the government must step up inspection and quarantine work, Yin added.

The H5N1 flu virus remains mainly a virus of birds, but experts fear it could change into a form easily transmitted from person to person and sweep the world, killing millions within weeks or months.

So far, most human cases can be traced to direct or indirect contact with infected birds.

China has not reported a poultry outbreak since September 20 last year, although the health ministry in January confirmed that a man in the eastern province of Anhui had contracted bird flu but subsequently recovered.

The virus has killed 166 people since 2003, according to the World Health Organisation.