论文部分内容阅读
流行性感冒在18～19世纪曾有7次世界性大流行，1889年以来又发生几次经病毒学证实的大流行。1953～1988年在我国至少发生过15次大、中规模的流行．1956年以来上海地区亦有12次流感流行，均由甲型流感病毒所引起。乙型流感在我国曾于1964～1965在东北，1973年在浙江，1981年在东
There were seven worldwide pandemic influenza epidemic in the 18th and 19th centuries and several virologic-confirmed pandemances since 1889. From 1953 to 1988, at least 15 large and medium-scale epidemic took place in our country. There have also been 12 influenza epidemics in Shanghai since 1956, all caused by the Influenza A virus. Influenza B was in our country from 1964 to 1965 in the northeast, in 1973 in Zhejiang, and in 1981 in the east