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四川省病毒性肝炎呈埘期性流行,从1956～1983年(共27年),每7年出现一次高峰。流行高峰年分别为1959、1966、1973、1980年,出现流行高峰的重要原因是爆发流行点的增加。研究并找出引起爆发流行的主要病因,才能提供有针对性的防治措施,减少爆发流行地区及强度,从而降低全省病毒性肝炎的发病率。 1980年是近十年来发病率最高的一年,1981年、1982年发病率逐年下降,1983年又开始回升。从1983年下半年起爆发点逐渐增多,到1985年底全省各地向本站报告的爆发流行有二十余处,对其中6处进行了调查和研究。
The viral hepatitis in Sichuan showed a seasonal epidemic, with a peak every seven years from 1956 to 1983 (27 years in total). Pop peak year were 1959, 1966, 1973, 1980, the peak of the epidemic is an important reason for the outbreak of epidemic increases. Research and identify the main etiology of the outbreak caused by the epidemic in order to provide targeted prevention and control measures to reduce the outbreak of endemic areas and intensity, thereby reducing the incidence of viral hepatitis in the province. The year 1980 witnessed the highest incidence in the past decade. In 1981 and 1982, the morbidity dropped year by year and again in 1983. From the second half of 1983, the number of points of attack gradually increased. By the end of 1985, there were more than 20 reported outbreaks to this site in Taiwan, of which 6 were investigated and studied.