【摘要】 目的　探讨洪灾与血吸虫病流行关系。方法　通过 1999年 5～ 11月试区人群暴露方式、人数、次数和时间及人群洪灾前后血吸虫病感染率和感染度的调查进行综合分析。结果　试区人群暴露方式共 3类 11种 ,总暴露率 5 3.5 5 %。汛期暴露人数、次数及暴露时间显著增多。洪灾后人群血吸虫感染率和感染度显著增高 ;暴露组与非暴露组血吸虫感染率和感染度差异有显著性。结论　洪灾增加人群暴露和感染 ,必须针对不同人群和不同暴露方式 ,加强健康教育和控制发病。更多还原

【Abstract】 Objective To explore the relationship between flooding and the prevalence of schistosomiasis in the river beach area. Methods The subjects were investigated on the ways of exposure, frequency and duration of water contacted from May to November in 1999, and eggs of Schistosoma were examined before and after flooding. Results Exposure to infested water for human beings in the area comprised productive, living and recreational contacts including 11 kinds of activities, and 53.55% of the subjects contacted infested water. The number of person, frequency and duration of water contacted in flooding strongly increased; the infection rate and density among population strongly increased after flooding. There was significant difference between the infection rate in exposure group and that in non exposure group. Conclusions It can be inferred that flooding has increased water contacted and infection, therefore, health education should be strengthened to avoid or decrease water contact.更多还原