The cholera threat and the work of John snow

• An outbreak of Cholera in 1848-49 Claimed over 52000 lives
• Another outbreak in 1854 allowed Snow to test his theory that Cholera was caught orally
• • He mapped the adresses of people that had died in Soho, London
  • the found most of these people collected their water from the broad Street pump
  • He managed to trace the origins of cholera outbreak to a woman who had put her baby's soiled nappy into a sewage disposal. that sewage disposal had a crack in the wall, and was leaking into the broad street pump
• • when snow removed the handle from the pump, cholera deaths in Soho dropped dramatically
  • He showed the government his findings, however many Doctors believed that it was miasma around the pump causing disease. Therefore his work had little effect At the time