World Bank|Harvard University|University of Chicago|Harvard University|Center for Effective Global Action|University of California, Berkeley
two billion people infected intestinal worms 1 many areas majority schoolchildren infected world health organization called schoolbased mass deworming key area debate whether deworming medicine worksin fact medical literature finds treatment highly effective 2 thus standard care calls treating patient known harbor infection authors cochrane systematic review point critical issue evaluating current soiltransmitted helminth policies whether benefits deworming exceed costs whether would prudent use money purposes 3