Effect of complete and incomplete Fangyouling embrocation on the prevention of schistosomiasis

Objcetive To investigate the failure of Fangyouling embrocation on the prevention of schistosomiasis.Methods 3 randomly selected administrative villages from Tuanfeng county,Yangxin county and Huangpi district were selected in this investigation.At least 50 randomly selected villagers in each administrative village who had contacted with the contaminated water after application of Fangyouling were interviewed.110 villagers(69 male and 41 female) with complete embrocation with Fangyouling were assigned as group A,and the 49 villagers(37 male and 12 female) receiving incomplete Fangyouling embrocation were assigned as group B.Results The average age of villagers in group A was(49.8±8.6).The average exposure time in the contaminated water was 230 min /day.Fecal examination revealed that no villager was infected.The average age of group B was(48.1±8.6).The average exposure time in the contaminated water was 220 min /day.Fecal examination revealed that 6.1% had the infection,and the result was significant different from group A(χ 2 =6.9,P0.05).Conclusion Complete Fangyouling embrocation was better than incomplete embrocating.Incomplete embrocation might be the cause of infection.