But it can be acquired in the air, from patients that are from- from other individuals that are infected.

天花会通过空气传播,通过病人和其他感染者呼出的空气传播

耶鲁公开课 - 生物医学工程探索课程节选

Separating our water supply from sewage and learning how to do wastewater treatment was a really important part of reducing infectious diseases.

把净水和污水分开,以及学会污水处理的方法,是减少感染性疾病传播方法中的重要部分

耶鲁公开课 - 生物医学工程探索课程节选

That had a remarkable effect on reducing transmission of infectious diseases, in doctor's offices and hospitals.

这显著的减少了,在医生的办公室和医院内部,感染性疾病的传播

耶鲁公开课 - 生物医学工程探索课程节选