How did germ theory change heath care?


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Duane Bryant answered
The biggest change was that health care people (doctors, nurses, etc) started washing their hands before touching patients so that they did not spread germs from patient to patient.
The second change was that a wounds would be cleaned and sterilized (usually with alcohol) to kill germs. 
Third, doctors started to clean and then even sterilize their instruments (scalpels, etc) between patients.
And then people learned how to grow germs and found out what would kill them (sulfa, penicillin)
It is said that during the Civil War, more people died from infection than from their injuries.

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