Abstract: AIM: In order to know the present status of the endemicity of schistosomiasis and to evaluate the control effect during 1990-1995, a second nationwide sampling survey on schistosomiasis japonica was undertaken during September and November of 1995. METHODS: A stratifying and clustering random sampling technique was used in the survey. Serological test, circumoval precipitin test or indirect hemagglutination assay were used for preliminary screening. Stool examination using hatching technique and Kato Katztechnique w as app lied fo r ident ificat ion
of the infected persons and intensity of infect ion and hatch ing test only fo r survey of domest ic animals.
RESULTS: In 195 samp led villages from endem ic areas, a to tal of 224 819 peop le w ere ex2
am ined. The infect ion rate of residents w as 4189% and the infect ion rate of farm cat t le w as
9106%. In the 169 samp led villages from endem ic areas under cont ro l, only 17 out of 18 302 ch il2
dren w ere ident ified as infected by stoo l exam inat ion from Hubei and Sichuan P rovinces. F rom the
results of the survey, the number of infected persons, and the number of infected farm cat t le and
w ater buffaloes w ere est imated to be 865 084 and 100 251, respect ively, in the w ho le count ry.
CONCLUSION: A s comparedw ith the data in 1989 , a reduct ion of 4712% in infected persons and
about 50% in infected farm cat t le and w ater buffaloes, respect ively, w as show n.

Key words: Schistosomiasis japonica, epidemiology, sampling survey, China