1) Where did Koch go to study cholera?
2) What were the consequences of the cholera epidemic?
3) Who did not catch cholera?
4) Who did Koch start his research with?
5) What did he find in the organs of people who had died of cholera?
6) What did the microorganism that Koch found in the people's intestinal walls look like?
7) What didn't Koch manage do with the bacterium?
8) What other place did Koch go to continue his research?
9) What did he find in the dirty water in one of the streets?
10) What conclusion did Koch draw after detecting these bacteria in the water?
11) What was the source of this disease?