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JohnSnowsuspectedthatthesecondtheorywascorrectbutheneededevidence.Sowhenanotheroutbre...
John Snow suspected that the second theory was correct but he needed evidence.So when another outbreak hit London in 1854,he was ready to begin his enquiry.As the disease spread quickly through poor neighbourhoods,he began to gather information.In two particular streets,the cholera outbreak was so severe that more than 500 people died in ten days. He was determined to find out why.
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