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transmission through flies is reduced) Handwashing with soap up to: 45% (Hands are clean) Improved water quality: 39% (Transmission via consumption of contaminated water is reduced)
(Fewtrell L. et al: Water, sanitation and hygiene interventions to reduce diarrhoea in less developed countries: a systematic review and meta-analysis. Lancet Infectious Diseases, 2005, 5(1): 42-52)
3) Climatic conditions Does the climate (seasonal varation of sunshine, temperature and rainfall) favour the application of SODIS? 4) Bottle availability Are plastic bottles available in the project area or will a bottle supply scheme be developed during project implementation? Can the target population afford to buy an adequate number of plastic bottles?