2. Schistosomiasis

The Schistosoma parasite, a helminth, is transmitted through human waste. These parasitic worms or schistosomes are acquired through contact with water contaminated by urine and feces. Nearly 260 million people are infected with schistosomiasis worldwide. The parasitic infection is widespread, affecting people in Africa, South America, the Caribbean, China, and the Middle East. Symptoms progress from an itchy rash, to malnutrition and anemia, to organ failure.

schistosomiasis helminth parasitic worm jxfzsy / Getty Images


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