Brazilian contributions to epidemiological aspects of schistosomiasis mansoni.

A review of epidemiological aspects of endemic areas for schistosomiasis, especially in Brazil, will be presented. These studies, performed by several authors from different states of the country, have been very useful in indicating the relative efficacy of control measures. For example quoting only one aspect, specific treatment was demonstrated by Brazilian researchers to be the most important individual tool for morbidity control. More recently the study of risk factors in endemic areas has been seen to be a very important approach when transmission control is the final goal.