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- Snow reasoned that cholera was caused by a microbelike agent, or germ, that was spread through direct fecal contact, contaminated water, and soiled clothing. However, his theory was at odds with the then prevailing theory that cholera was spread by bad air, or miasma, arising from decayed organic matter.
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May 28, 2018 · Snow was skeptical of the reigning miasmatic theory of disease because of his own experiences fighting cholera. Even though he pre-dated germ theory and didn’t know that a bacterium caused cholera, he nonetheless tracked the outbreak of the disease.
May 1, 2024 · Snow reasoned that cholera was caused by a microbelike agent, or germ, that was spread through direct fecal contact, contaminated water, and soiled clothing. However, his theory was at odds with the then prevailing theory that cholera was spread by bad air, or miasma, arising from decayed organic matter.
- Ralph Frerichs
The alternative theory, supported by John Snow, held that cholera was caused by a germ cell, not yet identified. He reasoned that this germ was transmitted from one person to another by drinking water. Snow's germ theory was deemed "peculiar" by John Simon, head medical officer of London, but has since met the test of time.
Farr denied Snow's explanation of how exactly the contaminated water spread cholera, although he did accept that water had a role in the spread of the illness. In fact, some of the statistical data that Farr collected helped promote John Snow's views.
Mar 14, 2017 · On September 8, 1854, Snow tests his theory by removing the pump’s handle, effectively stopping the outbreak, proving his theory, and opening the door to modern epidemiology. Valuable Lessons for a Modern Age. In 1854, John Snow was the first to use maps and records to track the spread of a disease back to its source.
Jun 16, 2020 · The facts proved him right in the decades following his death: during the next cholera epidemic (in 1866), health authorities proved that Snow’s ideas were valid and that the water from that pump was mixed with faecal water; in 1884 Robert Koch finally identified the faecal bacterium Vibrio cholerae as the agent causing cholera.
May 18, 2006 · An early believer in the theory of contagion, he grasped the opportunity of a peculiarity in the water supply in London to gather quantitative evidence supporting his theory that cholera was transmitted by polluted water.
