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本文应用间接血凝试验(IHA)对基本消灭血吸虫病7年的江厦生产队和12年以上的新建八队,以及正在流行的西庙四队和非流行区的李村十一队五岁以上的自然人群进行调查。结果提示了随着感染的控制,人群血凝抗体水平将逐渐下降,在基本消灭地区可下降为较低水平,在基本消灭多年的地区,则可下降到正常人群的水平。年龄分组资料表明,在低年龄组(5～14,15～24岁组),江厦的IHA阳性率和GMRT与新建、李村的都很接近,这可能与近年来感染已控制,低年龄组已无新感染和重复感染的机会有关。而在大年龄组(25岁以上),IHA的阳性率和GMRT。江厦虽较新建和李村明显高,但较西庙的为低,说明大年龄组IHA的阳性率和GMRT可反映该地控制感染时间的长短,在这一点上,IHA似较皮内试验为优。
This article applies the indirect hemagglutination test (IHA) to Jiangxia production team, which basically eliminated schistosomiasis for 7 years, and newly built 8 teams for more than 12 years, as well as the popular Li Mu 11 team and the non-endemic areas, Li Cun, Above the natural population to investigate. The results suggest that the level of hemagglutination antibody in the population will gradually decrease with the control of infection and may drop to a low level in areas where the population is basically eliminated and may drop to normal levels in areas that have basically disappeared for many years. Age group data show that in the low age group (5 to 14, 15 to 24 years old group), Jiang Ha IHA positive rate and GMRT and new, Li Cun are very close, which may be infected in recent years has been controlled, low age The group has no new infection and the chance of repeated infections. In the older age group (25 years of age or older), IHA positive rates and GMRT. Although Jiangxia was significantly newer than Licun, it was lower than that of Ximiao, indicating that the positive rate of IHA in large age group and GMRT can reflect the length of time of infection control in this area. In this respect, IHA is more effective than intradermal test Excellent.