Distribution of incident <i>S. japonicum</i> infections by age in cohorts 1 (top) and 2 (bottom).

Abstract

<p>Incident <i>S. japonicum</i> infections were measured at two follow-up points (2002 and 2006 in cohort 1, 2008 and 2010 in cohort 2). All participants were tested for <i>S. japonicum</i> at enrollment (2000 in cohort 1, 2007 in cohort 2) and all infections were promptly treated with praziquantel.</p