| control of schistosomiasis in the new rahad irrigation scheme of central sudan. | as the new rahad irrigation scheme in central sudan began its first agricultural season in 1978, the blue nile health project was being developed to prevent schistosomiasis and other water-associated diseases in the rahad and gezira-managil schemes. taken as an indication of overall transmission in the rahad scheme, the prevalence of infection among children in the newly established schools was found initially to be 14% for schistosoma mansoni and 1% for schistosoma haematobium in 1980. in the o ... | 1985 | 4032520 |