[Epidemiologic study of risk factors in polio--case-control study on 117 pairs. Zhang Rongzhen and Shandong Collaboration Group of Poliomyelitis].

In Oct. 1989 we carried on the case-control study on children with polio in a few years, matched with 1:1 in two districts in Shandong province. According to the results of data of 117 pairs condition logistic stepwise regression was analysed. The major risk factors on polio are: no oral poliovaccine, distance between the place of vaccination and the house hygiene knowledge, type of drinking and annual revenue of the family. It was showed in order to prevent polio, we must strengthen propaganda on hygiene knowledge and improve hygiene environment when enhancing oral polio vaccine rate increasingly.