1. WHO Hepatitis E 2017 http://www.who.int/mediacentre/factsheets/fs280/en/
2. Science L. Hepatitis: Symptoms, Treatment & Prevention 2015 http://www.livescience.com/34735-hepatitis-symptoms-treatment.html
3. CDC Viral hepatitis - hepatitis E information 2015 https://www.cdc.gov/hepatitis/hev/
4. Newsroom A. Hepatitis E outbreak highlights the lack of adequate water and sanitation conditions among displaced population 2017 http://www.africa-newsroom.com/press/diffa-niger-hepatitis-e-outbreak-highlights-the-lack-of-adequate-water-and-sanitation-conditions-among-displaced-population?lang=en
5. Sanitation and sewage disposal in India;Khuroo;JK-Practitioner,2015