该病的传播纯属当人们极少获得或者不能获得安全饮用水供应时饮用了含有受到寄生虫感染的蚤类的污染水。
It is transmitted exclusively when people who have little or no access to safe-drinking water supply swallow water contaminated with parasite-infected fleas.
在上世纪70年代早期，大部分农村居民使用被污染的地下水，用来饮用、沐浴、洗衣、洗碗以及灌溉。一时间，由水传播的疾病十分猖獗。
In the early 1970s most of the rural population USES contaminated groundwater for drinking, bathing, washing clothes and dishes, and irrigation. Waterborne diseases are rampant.
牛瘟可以通过空气和被含有病毒的动物粪便污染了的水来传播。
Rinderpest can spread quickly through the air and in water containing waste from animals with the virus.
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