Prevalence in endemic areas can reach from 5-20% "H. nana" is the most common cestode in humans with infection prevalence highest among children and in warm arid climates with poor sanitation facilities [1. Results of case studies completed on each continent suggest that "H. nana" is a difficult parasite to eliminate. The prevalence of "H. nana" in remote communities in northwest Australia is remarkably high, 55%. The transmission is due mostly from human to human contact and auto-infection In Bat Dambang, Cambodia, middle school students were found to have a 2.4% prevalence, more than the younger kids at 1.3%, suggesting children are not learning prevention techniques as they mature[8.