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哈尔滨市于1955年开始记载流感的流行状况,其流行多以散在发生及局部小暴发的形式出现。于1957～1958年出现两个双峰波的全市性大流行,这次流行和全国流行时间一致。相隔13年后,于1970～1971年又出现一次全市性的大流行。这次流行和我国北方诸省、市的流行时间相一致。此外,于1965年10月初到12月期间在全市范围内还发生一次高于一般年份的流感流行。从历年流感病毒型的变异来看,自1957年亚洲甲型A_2引起的大流行后,此型一直
Harbin City began to record the epidemic situation of influenza in 1955, and its epidemic mostly occurred in the form of scattered and partial minor outbreaks. The citywide pandemic with two bimodal waves appeared between 1957 and 1958, and this epidemic was in line with the prevalence throughout the country. After 13 years, another citywide pandemic occurred again in 1970-1971. This epidemic is consistent with the popular time of the provinces and cities in northern China. In addition, an influenza pandemic occurred in the city from the beginning of October until the December of 1965, which was higher than the normal year. From the calendar years of influenza virus type variation point of view, since 1957 Asian A-2 caused a pandemic, this type has been