John Snow & Cholera

• Who discovered the Broad Street Pump was causing deaths?

  John Snow
• What was the cause of deaths associated with the Broad Street Pump?

  The water from the pump was contaminated
• What action did John Snow take regarding the Broad Street Pump?

  • Snow plotted each death on a map and proved that everyone who died lived close to the Broad Street pump
  • People who used the water from the pump used it for cooking, drinking and washing
  • He removed the handle from the pump so it couldn't be used which led to no new cases of cholera or deaths
  • Snow discovered that a cesspit close to the pump had been leaking waste into the pump's water supply
• What was the result of breaking the Broad Street Pump?

  The deaths around the area of the pump stopped
• How did people attempt to prevent cholera?

  • Burning barrels of tar to remove bad air
  • Praying
  • Taking medicines that promised protection
  • Burning clothes and bedding of victims