On the mode of comunication of Cholera | John Snow
Physician John Snow is the protagonist of one of the most famous episodes of science in the 19th century, which has been narrated on numerous occasions. A devastating outbreak of cholera in London’s Soho in 1854 offered him the chance to collect data in the field to understand how the disease was transmit- ted. Snow demonstrated, against the prevailing opinion, that the medium for transmission of the disease was unsafe water and not atmospheric pollution. A central element in his investigation was the map on which he marked the addresses of the mortal victims, which shows that the public water pump on Broad Street was the origin of the outbreak.