Risk ratios for interval <i>Schistosoma</i> infection incidence after implementation of mollusciciding programs.

<p>Black circles indicate risk ratios (RR) estimated by random effects meta-analysis for <i>Schistosoma</i> infection incidence after mollusciciding, as compared to pretreatment levels. Whisker bars indicate the 95% confidence interval for the RR estimates. Numeric details are provided in Supporting Information file <a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0004290#pntd.0004290.s008" target="_blank">S3 Table</a>. Results are shown for all studies reporting human incidence data after implementation of control (top line, N = 17), and for study subgroup categories classified according to parasite species, geographic region, which age groups were included, the types of water bodies treated, and whether the program included snail control (SC) only, or mollusciciding combined with some form of drug treatment intervention, including targeted mass drug administration (MDA).