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5月11日、13日,四川成都、山东济南先后确诊两起甲型H1N1流感输入型病例,一场围绕这两起甲型H1N1流感密切接触者的大追踪在全国紧急展开。
On May 11 and 13, two imported cases of type A and H1N1 influenza were diagnosed successively in Chengdu, Sichuan and Jinan in Shandong Province. A large follow-up around the close contacts of the two Influenza A (H1N1) flu was launched urgently across the country.