| intestinal helminth infections in rural school children in njala, sierra leone. | in a survey of five primary schools and one secondary school in and around the njala university college environment, in southern sierra leone, 1820 school children were examined. ascaris lumbricoides was the most common helminth encountered (33.3%) followed by trichuris trichiura (14.6%) and hookworm infection (10.4%). there was striking differences in the rate of infection between the various schools with the international school being the least affected by all parasites. multiple infections we ... | 1994 | 7705250 |