The sensitivity and specificity of surveillance methods to identify villages with human S. japonicum infections.

*Village-wide infection surveys were used as the gold standard. Every resident was asked to provide three stool samples which were examined using the miracidium hatching test and Kato-Katz thick smear procedure.†Estimated sensitivity and specificity were adjusted to account for oversampling of villages where acute schistosomiasis was reported.‡Excludes six villages where bovines were present but not tested.**Includes, for each person, three miracidium hatching tests from three stool samples.††Includes, for each person, three Kato-Katz slides prepared from one stool sample.