Hunan Province, today confirmed a new human cases of H7N9 avian influenza infection. The 69-year-old male patient Zhao, Shaoyang City Wugang farming. On May 24, the disease, is currently in critical condition. Zhao before the onset of a history of exposure to poultry, its close contact with a total of 50 people have been taken under medical observation, has not found exception.http://news.on.cc/cnt/china/20130501/bkn-20130501163949274-0501_00922_001.html