More than 80% of those cases can be attributed to contact with contaminatedwater and a lack of proper sanitation.
其中80%以上的病例可归因于接触了受污染的水和缺乏适当的卫生设施。
2
Dracunculiasis is the second disease which is approaching eradication (the first being smallpox) and it occurs only after people drink contaminatedwater.
The divers also wear specialized dive suits and old-fashioned hard steel helmets so they can safely operate in contaminatedwater without being exposed to toxins.