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1.什么是H7N9禽流感?禽流感,是由甲型流感病毒的一种亚型引起的急性传染性疾病。它通常只感染鸟类,少见情况会感染人、猪、马、水貂和海洋哺乳动物。可感染人的禽流感病毒亚型为HSNl、H9N2、HTN7、HTN2、HTN3。此次报道的人感染HTN9禽流感病毒,是H7N9和H9N2基因重配的新病毒。2013年以前,中国没有发现人感染H7禽流感病例。2.人是怎样惑染上H7N9禽流感的?部分确诊病例曾经接触过动物或者处于
1. What is H7N9 bird flu? Bird flu is an acute infectious disease caused by a subtype of influenza A virus. It usually infects birds only, rare in people, pigs, horses, minks and marine mammals. The avian influenza virus subtypes that can infect humans are HSN1, H9N2, HTN7, HTN2 and HTN3. The human being reported this time is infected with HTN9 bird flu virus and is a new virus reassorting H7N9 and H9N2 genes. Before 2013, no human infection of H7 bird flu was found in China. 2. How are people infected with H7N9 bird flu? Some confirmed cases have been in contact with animals or in