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What factors that may have influenced the decrease in the number of deaths from cholera from august 31st up until the time (September 8th) that John Snow removed the handle of the Broad Street? please select all that applies. A. The disease had run its course. B. About three-quarters of the people in the city had run away by Sept, 7 C. All the water companies changed their source of water supply. D. The virulence (potency of the infectious agent to cause death) of the infectious agent reduced. E. Majority of the people in the city chose to drink beer instead of water as they believed the water source was the cause of cholera.
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