Dengue is a mosquito-borne viral disease that has rapidly spread to all regions of WHO in recent years. Dengue virus is transmitted by female mosquitoes mainly of the species Aedes aegypti and, to a lesser extent, Ae. albopictus. These mosquitoes are also vectors of chikungunya, yellow fever and Zik...a viruses. Dengue is widespread throughout the tropics, with local variations in risk influenced by climate parameters as well as social and environmental factors.
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communicable Disease Toolkit
Document available in English, French, Russian, Spanish, Portuguese and Swahili. For other languages check also: http://www.who.int/cholera/publications/OutbreakAssessment/en/
Environmental Health in Emergencies and Disasters
Annex 6
Manual for Trainers and Programme Managers
A septic tank takes raw sewage in, allows the solids to settle (sludge) and allows the remaining liquid to flow into the surrounding soil by means of a soakaway. Scum on the surface is also prevented from leaving the tank. Microorganisms in the anaerobic environment in the tank digest the sludge and... scum. The system consists of several stages, supply to the tank, the tank itself and the soak field.
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The emergency Water, Sanitation and Hygiene Promotion (WASH) gap analysis project was funded by The Humanitarian Innovation Fund (HIF), a program managed by Enhancing Learning and Research for Humanitarian Assistance (ELRHA) in partnership with the Active Learning Network for Accountability and Per...formance in Humanitarian Action (ALNAP), and is a component of a larger initiative to identify and support innovations in emergency WASH. This paper gives an explanation of the background, methodology, and findings of the program.
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