On 11 June 2009, the WHO declared an H1N1 pandemic, moving the alert level to phase 6, marking the first global pandemic since the 1968 Hong Kong flu.[28] On 25 October 2009, U.S. President Barack Obama officially declared H1N1 a national emergency[29]
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• H1N1美国两百多万传染最后死几千,这个假如不封全国估计几千万人传染死几十万 -飞鸿2000- ♂ (170 bytes) () 02/09/2020 postreply 08:21:10