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1997年在香港首次发现H5N1禽流感会致命地传染给人,轰动一时,禽流感从此进入了大众语汇。世界上每年都有人感染了H5N1,每年也都有人因此死亡。直到今年,中国还有2人感染H5N1,2人都死亡,但有多少人关心它呢?现在大家关心的是新出现的H7N9禽流感。H5N1和H7N9都属于甲型流感病毒。流感病毒分为甲、乙、丙三型,其中最常见、能引起严重后果因而也是人们最关心的是甲型。在流感病毒的表面存在两种
In 1997, it was first discovered in Hong Kong that the H5N1 bird flu would be fatally transmitted to people. As a result, the bird flu has now entered the public language. H5N1 is infected every year in the world and every year people die of it. Until this year, two more people were infected with H5N1 in China and two were dead, but how many people are concerned about it? Now everybody is concerned about the new H7N9 bird flu. Both H5N1 and H7N9 are influenza A viruses. Influenza virus is divided into A, B, C three types, of which the most common, can cause serious consequences and therefore most people are concerned about is A-type. There are two types of viruses on the surface of influenza