John Snow (1813-1858) first became interested in cholera at Newcastle-on-Tyne during the epidemic of 1831-1832. Recurrent outbreaks of the disease gave him the

"It is the summer of 1854. Cholera has seized London with unprecedented intensity. A metropolis of more than 2 million people, London is just emerging as one of

Cholera was the classic epidemic disease of the nineteenth century, as the plague had been for the fourteenth. Its defeat was a reflection not only of progress