John Snow

Question 1

During which time period did Snow work?

Answer 1

Industrial.

Question 2

Who was John Snow?

Answer 2

A doctor and a surgeon.

Question 3

What was his theory?

Answer 3

That cholera was spread by water, not air.

Question 4

When did Snow create this theory?

Answer 4

1849

Question 5

When was the next cholera epidemic?

Answer 5

1854

Question 6

What did Snow do during the cholera epidemic of 1854?

Answer 6

• He mapped the deaths near his surgery and traced the outbreak back to one water pump
• He removed the handle of the pump and the outbreak died down.
• This proved that cholera came from dirty water.

Question 7

Why did Snow’s discovery have little short-term impact?

Answer 7

Germ Theory had not been discovered yet so he was unable to prove why it worked.