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目的探讨浙江省临安市伤寒副伤寒流行规律。方法采用描述流行病学方法对临安市2002-2008年伤寒副伤寒疫情资料进行统计分析。结果2002-2008年临安市累计报告伤寒副伤寒1085例,无死亡病例,年平均发病率29.41/10万,男性发病多于女性,男女性别比为1.38∶1,发病年龄集中在15~44岁年龄组,职业以农民、民工为主;7年中发生暴发疫情3起,发病例数占58.53%。结论临安市2002-2008年报告伤寒副伤寒发病率呈明显上升趋势,地区分布具有集中趋势,季节主要集中于4-8月;流行菌株为甲型副伤寒杆菌,水源污染是副伤寒高发的主要危险因素。
Objective To investigate the prevalence of typhoid and paratyphoid in Lin’an City, Zhejiang Province. Methods Descriptive epidemiological methods were used to analyze the data of typhoid and paratyphoid fever in Lin’an from 2002 to 2008. Results From 2002 to 2008, a total of 1085 cases of typhoid and paratyphoid fever were reported in Lin’an City without any deaths. The average annual incidence rate was 29.41 / 100000. The incidence of male and female was higher than that of female. The male / female sex ratio was 1.38:1. The age of onset was 15-44 years old In the age group, occupations were dominated by peasants and migrant workers. Three outbreaks occurred in seven years, accounting for 58.53% of the total cases. Conclusions The incidence of typhoid and paratyphoid fever in Lin’an increased significantly from 2002 to 2008, and the distribution trend of the typhoid and paratyphoid fever was concentrated. The season mainly concentrated in April to August. The epidemic strain was Paratyphoid Salmonella Paratyphi A, which was the main source of paratyphoid fever Risk factors.