Two nonmarket valuation techniques-the contingent valuation method and travel cost model-are used to estimate the economic value that people in Davao, Philippines, place on improving the water quality of the rivers and sea near their community. The contingent valuation and travel cost estimates...

This article considers the investment case for using the Vi polysaccharide vaccine (Vi) in developing countries from two perspectives: reducing typhoid cases and limiting new health care spending. Consumer demand functions that predict probabilities of adults and children purchasing typhoid...

This paper presents a case study of water vending in Onitsha, Nigeria, one of the most important market towns in West Africa. It illustrates that a rapid reconnaissance survey of water vending activities and the willingness of households to pay for improved water services can yield valuable...