摘要： 446 households and 1762 individuals in a fish-farm of suburb of Wuhan city and Longkou townof Honghu county,Hubel Province were investigated by sociological methods.It was found that 73households and 157 persons were infected with Schistosoma japonicum.The 26 factors from the social,cultural and economic surveys are listed in Table 1～3(omitted).The statistical analysis revealed a