Avian influenza H7N9 viruses: a rare second warning
Avian influenza A H7N9 viruses that emerged in China in 2013 have reappeared each year,causing more than 1 600 severe human infections.As these viruses have evolved in nature,they have gained some and can gain additional virulence determinants that enhance their risk for humans,underlining the urgent need to control and eradicate H7N9 viruses in China.
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2018-03-06(万方平台首次上网日期,不代表论文的发表时间)
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