John Snow is often called the founder of epidemiology, the study of health in populations. He is best known for his work on tracking the spread of cholera during an epidemic in London in 1854.

The leading voices in medicine believed the disease emanated from the foul gasses of London’s polluted streets. John Snow, a prominent anesthesiologist, was convinced otherwise. “He was the original ...

In 1854, cholera struck again. In London, Dr John Snow studied the spread of cholera in the Broad Street area. He noticed that the victims had all drunk water from the pump in the street.

But a couple of top blokes called Edwin Chadwick and John Snow were determined to change this by exploring the link between living conditions and disease, like cholera and influenza which were ...

John Snow started mapping incidences of the disease in Soho, and noticed clusters around the Broad Street water pump. Snow disabled the pump (a recently restored replica of which stands outside ...