| a national survey of the prevalence of schistosomiasis and soil transmitted helminths in malawi. | past estimates have put the prevalence of schistosomiasis between 40% and 50% in the malawi population overall based on studies undertaken ten years or more ago. more recent surveys in known high risk areas find similar levels. however control measures, changing ecology and migration may have led to changes in the prevalence of schistosomiasis in different parts of malawi. a national schistosomiasis and soil-transmitted helminth (sth) survey was undertaken to measure the distribution, prevalence ... | 2004 | 15546483 |