REUTERS/Stringer/china
A bird is put on sale at a market in Xiangfan, central China's Hubei province February 27, 2006. Two people diagnosed with bird flu remained in critical condition on Sunday as China published plans to cope with sudden medical emergencies. China warned of the threat of a massive avian flu outbreak among birds in the country on Saturday as it reported two new human cases -- the girl in Zhejiang and a woman farmer in neighboring Anhui province, Xinhua news agency said.