Snail As Echinostoma revolutum ages, its new size and body acclimates to different habitats. The egg of an Echinostoma revolutum can be found in freshwater habitats (Kanev 1994). Once the egg hatches and the Echinostoma revolutum is a little larger, it inhabits in an intermediate host such as the body of a snail or a frog (Kanev 1994). What happens next is that humans, mammals, or birds eat a raw snail or frog. This is when the infection of Echinostoma revolutum is planted into the human, bird, or mammal’s body. Although the bird is most likely to ingest snails or frogs, humans also have the possibility and since the adult Echinostoma revolutum can be found in the human body, it can be transferred to nearly any place on the earth that the human can go to. As you can see, Echinostoma revolutum uses species from both aquatic and terrestrial environments to complete their lifecycles. 

    Echinostoma revolutum is found in the Americas, Vietnam, Poland, England, Thailand, Germany, Austria, Bulgaria, Malaysia, England, Russia, and India (Kanev 1994). Also, snails that carry Echinostoma revolutum are found in North America and Eurasia (Serensen et al., 1997). A study was conducted in June 2007 on children in lakeside villages in Pursat province in Cambodia (Chai 2011). This area has about 12,000 people including about 3,500 children living there (Chai 2011). The study included collecting fecal samples of about 470 children between the ages of 10-14 years old from four different schools in the Pursat province (Chai 2011). Once the fecal samples were collected, within two to three days, the fecal samples were sent to Malaria station in Pursat where they were stored at 4⁰C until examination (Chai 2011).  A total of 17.4% of the samples were positive for parasite eggs, echinostomatid eggs being the most common (Chai 2011). The first school tested was significantly higher than the otherCambodia-Wikipedia three schools when tested for echinostomatid eggs. Four children who tested positive for the echinostomatid eggs that were experiencing abdominal pain, diarrhea, and discomfort were selected for treatment with the consent of their parents. Because echinostomatid eggs can be found in children, it can also be found in other people who live or visit that area therefore it can be transferred around the world if not treated right away.


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