| development of schistosomal school-based health education model for yemeni schoolchildren. | in this study, 152 students (90 males & 62 females) of primary (5th & 6th grades, 52 males & 30 females) and preparatory (1st & 2nd grades, 38 males & 32 females) schoolchildren of different age and sex group inhabited in two endemic villages with schistosoma mansoni in taiz govenorate were examination. the highest prevalence and intensity of s. mansoni were-among males at the age group from 10 - < 12 years. a significant relationship was recorded between prevalence and intensity of infection an ... | 2007 | 17985596 |