Which of the following best describes how John Snow was able to decrease deaths from cholera?
a. Removed a source of contaminated water
b. Created the world's first antibiotic
c. Encouraged the new process of vaccination
d. Helped pass laws that required home quarantine
ANS: A
John Snow demonstrated that cholera was transmissible through contaminated water. He removed the pump handle from the contaminated water so an alternate source of water had to be used. Alexander Fleming created the first antibiotic. Legislators were responsible for encouraging the new process of vaccination and passing laws related to home quarantine.
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