In the experiment group , the awareness rates of schistosomiasis control knowledge were 7.96 % and 96.39 % before and after the intervention , respectively ; the rates of contacting infested water were 100 % and 1.77 % pre - and post-intervention , respectively ; the work protective rates increased from zero before the intervention to 100 % after the intervention ; there was no person infected with schistosome after the intervention .