A systematic review and meta-analysis by Kathrin Ziegelbauer and colleagues finds that sanitation is associated with a reduced risk of transmission of helminthiases to humans.
Original Source [2]
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/effect-sanitation-soil-transmitted-helminth-infection-systematic-review-and-meta
[2] http://www.plosmedicine.org/article/info%3Adoi%2F10.1371%2Fjournal.pmed.1001162
[3] http://admin.indiaenvironmentportal.org.in/category/author/kathrin-ziegelbauer
[4] http://admin.indiaenvironmentportal.org.in/category/author/benjamin-speich
[5] http://admin.indiaenvironmentportal.org.in/category/author/daniel-m%C3%A4usezahl-et-al
[6] http://admin.indiaenvironmentportal.org.in/category/journal/plos-medicine
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sanitation
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waterborne-diseases
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waterborne-worms
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/toilets
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-care
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/developing-countries