The infected water fleas come from drinking water.

受感染的水蚤来自饮用水。

If you swallow infected pool water, you may become sick.

如果你吞下被感染的池水，也会生病。

The group also organized people to treat infected water supplies all over the world.

该组织还组织人们处理世界各地受感染的供水。

Cholera is an infectious bacterial disease that people usually get from infected water supplies.

霍乱是一种传染性细菌性疾病，人们通常从受感染的供水系统中感染。

For example, during the cholera outbreak famously investigated by John Snow, many of the people living in the neighborhood near the infected water pump had left before Snow finished his investigation.

例如，在约翰·斯诺调查的著名霍乱爆发期间，许多住在受感染水泵附近的居民在斯诺完成调查之前就离开了。