The seasonal characteristics of schistosomiasis trasmission are in relationship with these of cercaria shedding and of final host exposing to infectious water frequently. The rain is sufficient and snails are brisk in spring. People work busily, exposing to water, therefore, their opportunities of infection increase.

Oncomelania hupensis serves as intermediate snail host of Schistosomiasis japonnicum. In schistosoma life cycle, its larvae, for example, miracia and cercaria may live in body of snail, so, the snail is turned into the intermediate host of schistosoma.

Oncomelania hupensis serves as intermediate snail host of Schistosomiasis japonnicum. In schistosoma life cycle, its larvae, for example, miracia and cercaria may live in body of snail, so, the snail is turned into the intermediate host of schistosoma.

Oncomelania hupensis serves as intermediate snail host of Schistosomiasis japonnicum. In schistosoma life cycle, its larvae, for example, miracia and cercaria may live in body of snail, so, the snail is turned into the intermediate host of schistosoma.

Schistosomisis transmission must posses:

Human being is susceptible to schistosomisis japonica whatever age, sex and race they are in. people who have infected the parasite can have acquire-immune capacibility of reinfection in part, which is accompany immunozation. Some mammal may be susceptible to Schistosomisis japonica, i.e. cattle, pigs, cats, dogs, etc.

When showing malaise or similar schistosomisis syndrom with history of water contact in the disease endemic areas, you can suspect that you may have infected with Schistosomiasis japonicum and must have some examination in physique and laboratory, then, you can know if infected the disease.

Schistosomisis infection hasn't internal difference in human sex, age and race. The difference of infection rate produced mainly from no equal opportunities of people exposing to infectious water, in addition to nutrition status perhaps. So, women and children should avoid contacting with infectious water in endemic season. On working, women should bear protective shoes and gloves.