History of cholera
The history of cholera traces the disease’s epidemics, changing explanations of its causes, and effects on medicine, public health, and society.
Third cholera pandemic: The 1846–1860 cholera pandemic, which spread from India across Asia, Europe, Africa, and the Americas. Its London outbreak became central to John Snow’s investigation of cholera transmission.
Miasma theory: The historical belief that disease spread through harmful air arising from decay or filth. It shaped responses to cholera before germ-based explanations gained acceptance.
Ganges Delta: A vast river delta in South Asia formed by the Ganges, Brahmaputra, and Meghna rivers. The region is widely regarded as cholera’s endemic homeland and a source of early pandemics.
London sewerage system: The nineteenth-century network of sewers built to carry waste away from London. Cholera fears helped drive the reforms that produced the modern system.
Germ theory of disease: The scientific theory that specific microorganisms can cause specific infectious diseases. It ultimately displaced miasma as the leading explanation for cholera transmission.
Broad Street cholera outbreak: The 1854 cholera outbreak in Soho, London, investigated by physician John Snow. This outbreak supplied a landmark case in the history of cholera epidemiology.
John Snow: An English physician whose investigations helped establish that cholera spreads through contaminated water. His work challenged prevailing miasmatic explanations during the 1854 London outbreak.
First cholera pandemic: The 1817–1824 cholera pandemic, which spread from the Indian subcontinent across Asia and into parts of Africa. It began the recorded sequence of global cholera pandemics.
Metropolitan Board of Works: A London authority established in 1855 to coordinate metropolitan infrastructure, including sewer construction. Its projects translated sanitary reform into large-scale public works.
William Farr: An English epidemiologist and statistician who analyzed mortality patterns and initially favored miasmatic explanations of cholera. His debate with Snow illustrates how evidence gradually changed medical opinion.