1. 血吸虫病：smallpox天花 | snail fever血吸虫病 | streptococcus链球菌
1. It was later discovered that Wan was suffering from gastrointestinal bleeding, caused by snail fever.
2. Polluted water spreads infectious intestinal and parasitic diseases, particularly the killer schistosomiasis of snail fever.
3. Polluted water spreads infectious intestinal and parasitic diseases, particularly the killer snail fever.
4. His focus is on preventing and treating snail fever, a chronic parasitic disease that made Nanji known as " plague island ".
5. Some regions previously free of the illness have seen snail fever spread.