结论西昌高山型血吸虫病流行区不同人群疫水暴露方式、时间和暴露强度不同。
Conclusion Water exposure modes, times, and intensities of different populations were different in mountainous schistosomiasis endemic areas of Xichang.
方法采用队列随访调查的方法收集居民疫水暴露的情况，并用系统聚类法中样品聚类(Q型)进行聚类分析。
Methods The data of resident's contacting infectious water were collected with cohort study, and were analyzed by sample cluster analysis (Q type).
回顾性调查显示，既往不同暴露疫水方式和暴露强度的人群血清学阳性率不同。
As revealed from retrospective investigation, the positive rate of serological reaction varied with the manner and intensity of previous contact with water in endemic area.
回顾性调查显示，既往不同暴露疫水方式和暴露强度的人群血清学阳性率不同。
As revealed from retrospective investigation, the positive rate of serological reaction varied with the manner and intensity of previous contact with water in endemic area.
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