农村中小学生驱蛲后再感染的观察

OBSERVATION ON THE REINFECTION OF ENTEROBIASIS IN THE RURAL AREAS AFTER MASS CHEMOTHERAPY

用复方甲苯咪唑对中、小学生蛲虫感染者驱治后1.5月的再感染率为30％,6个月升至50％,一年达68.4％。小学生组的回升速度大于中学生,驱治一年后的再感染率分别为47.8％和85.7％(P<0.01),但在性别间无显著差异。

The dynamics of pinworms＇reinfection rates was observed by the use of the cellophane tape method after mass treatment with co-mebendazole.The results revealed that the egg positive rate was 30％ one and a half months after mass chemotherapy,then it rose up to 50％ six months later and reached 68.4％ one year later.The increase of the reinfection rates in the pupils is higher than that of the middle school students being 85.17％ in the former and 47.8％ in the latter(χ~2 =13.3, P<0.01).No marked differ ences were found between sexes and the authors suggest that mass chemotherapy is effective for reducing the infection sources of enterobiasis.