Study on the gene of poliovirus type I isolated from environmental water by PCR
Abstract: The genes of poliovirus type I isolated from environmental water were studied by PCR (polymerase chain reaction). It was found that 22 strains of the virus were all Sabin-related. The result showed that the wild polioviruses in the environmental water were substituted by the sabinstrain completely after carrying on the conduct of mass immunization campaignS and EPI in thisarea. The method was suitable for the gene analysis of poliovirus type I.