Predictors of human S. japonicum infection in regions of Sichuan, China where schistosomiasis reemerged.

Human infections were measured in November and December 2007 in 53 villages.*Odds ratios and relative risks for each demographic variable were calculated adjusting for county and historical evidence of reemergence in the village. Village-level correlation was accounted for using generalized estimating equations.†Models of S. japonicum infection intensity could not be fitted because no eggs were detected in some groups.‡Includes only adults (≥18 years).