In this Tuesday, Jan. 21, 2014 photo, a woman carries a chicken as she leaves a wholesale poultry market in Shanghai. A spate of bird flu cases since the beginning of the year in China has experts ... more 
In this Tuesday, Jan. 21, 2014 photo, a woman carries a chicken as she leaves a wholesale poultry market in Shanghai. A spate of bird flu cases since the beginning of the year in China has experts watching closely as millions of people and poultry are on the move ahead of the Lunar New Year holiday, the world's largest annual human migration. (AP Photo) less 
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Associated Press
Wed, Jan 22, 2014 3:17 AM EST