1. What causes cholera, and how is it transmitted?
2. Why weren't Snow's ideas about cholera accepted at this early date?
3. Explain why cholera outbreaks are more consistent with contamination of water than air.
4. Given that cholera outbreaks are more consistent with contamination of water than air, why did the
miasma model persist?
5. How did Snow's experimental research on anesthesia help him design a new model for the cause of
cholera?
6. Why would evidence of cholera in people living side by side, differing only in water supply, provide
critical evidence?
7. When was the germ theory of disease proposed, and on what basis?