Reading and thinking to skim m the passage to see if the order you decided in activity one was correct. John snow defeat king color, a color used to be one of the most feared diseases in the world, until a british doctor, john snow, showed how IT could be overcome. This illness causes a severe diary, dehydration and even death. In the early nineteen century, when an outbreak of color a hit europe, millions of people died from the disease. As a Young doctor, john snow became frustrated because no one knew how to prevent or treat collar a in time. He rose to become a famous doctor and even attended to queen Victoria when he gave birth. However, he never lost his desire to destroy cholera once and for all. In general, doctors in those days had two contradictory theories to explain how color are spread. One theory was not bad that caused the disease. The other was that cholera was caused by an infection from germs in food or water. Snow subscribed to the second theory, IT was correct, but he still needed proof. Consequently, when an outbreak of color, a hit london in eighteen fifty four, snow began to investigate. He discovered that in two particular streets, the color a outbreak was so severe that more than five hundred people died in ten days. He was determined to find out why snow began by marking on a map the exact places where all those who died had lived. There were multiple deaths near the water pump in broad street, especially house number ers sixteen, thirty seven, thirty eight and forty. However, some households, such as twenty and twenty one broad street and eight and nine cambridge street, i'd had no deaths. These people worked in the pub at seven cambridge street. They had been given free beer and so had not drunk the water from the pump. Snow suspected that the water pump was to blame. What is more, in another part of london, a woman and her daughter had died of color a after moving away from broad street, IT seemed that the woman liked the water from the pump so much that he had IT delivered to her house every day. As a result of this evidence, john snow was able to announce that the pump ed water Carried color a germs. Accordingly, he had the handle of the pump removed so that he could not be used through this intervention. The disease was stopped in its tracks. The truth was that the water from the broad street pump had been infected by wake. Moreover, snow was later able to show a link between other cases of color a and the different water companies. In london, some company sold water from the river terms that was polluted by raw waste. The people who drank this water were much more likely to get color a than those who drank pure or boiled water. Through snow's tireless efforts, water companies began to sell clean water under threat of coller around the world saw a substantial decrease. However, color a is still a problem. Each year, millions of people around the world get caller, and many die from IT. Fortunately, we now know how to prevent coloration, thanks to the work of john snow. Moreover, in his use of maps and statistics, snow transformed the way scientists study diseases. For this reason, snow is considered the father of modern epidemiology.