The prevalence of <i>S. haematobium</i> infection of selected primary school children before and after administration of praziquantel.

* The follow-up survey was conducted at 6-9 months after the chemotherapy. † The egg positive rate of schistosomiasis was increased from 27.3% to 45.6% at Khour Ajwal school of Al Jabalain Unit. OR, odd ratio; 95% CI, 95% confidence intervals The prevalence of S. haematobium infection of selected primary school children before and after administration of praziquantel.