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Schistosomiasis, also known as snail fever and bilharzia, is a parasitic worm infection that slowly destroys the kidneys and liver.

Schistosomiasis is sometimes called bilharzia or snail fever because the illness-causing larvae spend their nights tucked away in the shells of snails in freshwater lakes.

For example, “no significant, measurable progress” has been made toward eliminating schistosomiasis, also known as bilharzia and snail fever, according to the report.

Also called bilharzia or snail fever, schistosomiasis is caused by Schistosoma flatworms that live in freshwater snails, which they leave to burrow into humans wading or swimming.

China has reduced its prevalence of snail fever cases to below 400,000 a year out of 207 million worldwide, according to World Health Organization statistics.