He also noted that the WHO has identified the H7 virus family as a potential threat and earmarked possible vaccine candidates . NEW : first man to die lived in China in eastern China , but worked in Jiangsu province . Announcement comes Monday after the Third two other cases -- and first two deaths -- were announced . Officials are trying to find the source of the infections .
NEW : first man to die lived in China in eastern China , but worked in Jiangsu province . Announcement comes Monday after the Third two other cases -- and first two deaths -- were announced . Officials are trying to find the source of the infections .