cholera

The first city in the US to routinely disinfect water was Jersey City, New Jersey, in 1908. Water disinfection is a broad term that includes all methods of killing microbes in drinking water.
“After Metchnikoff discovered phagocytes, he plunged into researching human immunity, hopeful to find ways to extend lives. He was motivated by his own grim experiences with disease.
Cases of cholera can be found all over the world. That said, they are not typically found in certain places - like Canada.
The news of the cholera epidemic in Yemen is beyond comprehension. The disease is spreading with unprecedented speed. There are over 600,000 people infected and 2,000 dead - in about six months time. 
We can no longer refer to the spread of cholera in Yemen as an outbreak. That word is not nearly strong enough.