_5__ He found that most of the deaths were near a water pump. _6__ He had the handle removed from the water pump. II. Answer these questions. 1. John Snow believed Idea 2 was right. How did he finally prove it? 2. Do you think John Snow would have solved this problem without the map? Give a reason. 3. Cholera was a 19th century disease. What disease do you think is similar to cholera today? Why? The answers: 1. John Snow finally proved his idea because he found an outbreak that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water. 2. No. The map helped John Snow organize his ideas. He was able to identify those households that had had many deaths and check their water-drinking habits. He identified those houses that had had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause. 3. Three diseases, which are similar today, are SARS, AIDS and bird flu, because they are serious, have an unknown cause and need public health care to solve them. III. Group discussion What should you do if you’re travelling to a country that has a cholera outbreak? IV. Homework 1. Write a short summary of the reading passage. Use the details from Exercise1 on Page3 to help you, as well as the stages for scientific research in Pre-reading. 2. Get more information about some infectious diseases and modern scientists.
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