bilharziasis survey in british somaliland, eritrea, ethiopia, somalia, the sudan, and yemen.a survey of bilharziasis and its vectors in certain countries of north-east africa and of the red sea area, carried out between december 1951 and february 1952, is described within the framework of a review of the somewhat scattered and incomplete information already available on this subject in the literature. clinical inquiry and microscopic examination of random stool and urine specimens were used to obtain data on the endemicity of the disease, and many samples of suspect mollusc vectors of ...195613329840
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