流行病学实际工作中,通过流行病学的调查手段,疫情资料的累积等,描述疾病在一定范围内流行的时间,集体感染或爆发共同途径的判断,共同感染日期的推测,以及疫情资料的分析等。本文经多年流行病学实践,提出“流行时段”这一流行时间上的强度指标,应用于上述方面颇为实用,且计算 Epidemiological practical work, through epidemiological means of investigation, the accumulation of epidemic information, describing the prevalence of disease within a certain period of time, the common sense of collective infection or outbreak of judgment, the date of the coinfection of the speculation, as well as epidemiological data Analysis and so on. After many years of epidemiological practice, this article puts forward the strength index of “popular period” in this popular time, which is quite practical for the above-mentioned aspects and the calculation