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* [https://www.cdc.gov US Centre for Disease Control and Prevention]
* [http://www.ecdc.europa.eu/en European Centre for Disease Control and Prevention]
* [http://www.who.int/water_sanitation_health/en/WHO Water Sanitation and Hygiene]
* [http://www.ifh-homehygiene.org The International Scientific Forum on Home Hygiene]
* [http://www.hygienecentral.org.uk/The Hygiene Centre, London School of Hygiene and Tropical Medicine]{{dead link|date=December 2017 |bot=InternetArchiveBot |fix-attempted=yes }}
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