【摘要】 对上海市徐汇区1956～1985年麻疹病例的流行病学分析表明,麻疹有明显的季节性,初夏高峰在双年6月,冬春高峰在单年1月。大规模接种后每年4月有一晚春高峰。季节高峰的成因是多样的,既有麻疹病毒的生物学因素,又受宿主因素和社会生活因素的影响。这些因素在不同季节高峰中的作用主次不同,在不同时期作用方式也不同。这种情况可能不限于麻疹。季节的低谷期是麻疹传播之链中的最脆弱之处,这是安排麻疹预防接种的最好时机。更多还原

【Abstract】 Epidemiological analyses of measles cases reported to Anti-Epidemic Division of Xu Hui District Health Center from 1956 to 1985 were carried out. Significant seasonal peaks of the incidence of measles were found: early summer peak in June of even years; winter-spring peak in January of odd years and late spring peak appeared in April of every year after mass immunization.The causes of seasonal variation were found multiple. biological factors of measles virus, host susceptibility and social activity were the main influencing factors. These factors played different roles in different seasons and periods. The seasonal trough in the incidences of measles is the breakthrough in the chain of transmission of measles. This is an appropriate time for mass immunization.更多还原