Four outbreaks of cholera in the 1830s and 1840s killed many people in England.
In 1854, “the most terrible outbreak of cholera which ever occurred in the kingdom” began. It was so violent and sudden that 127 people died in the first three days.
John Snow 约翰.斯诺(1813 ~ 1858), 英国麻醉学家、 流行病专家。他首次提出了 预防霍乱的措施。1854年, 伦敦霍乱流行, 斯诺通过研究 霍乱病死者的日常生活情况, 寻找到他们的共同行为模式, 发现了霍乱与饮用不洁水的 关系, 由于及时切断了二者 的联系, 有效制止了霍乱的 流行。
find a problem make a question think of a method collect results analyse the results find supporting evidence
draw a conclusion
John Snow defeats “King cholera”
The terrible cholera
Bacteria/germs of cholera
Name of illness Symptom(症状)
cholera (霍乱)
severe vomiting (呕吐) and diarrhoea (腹泻)
die quickly from a loss of liquid Aftereffect (后果)
Match them
Para 1 Para 2
Para 3
Para 4 Para 5 Para 6
Para 7
find a problem
make a question think of a method collect results analyse the results repeat if necessary
Maybe you have got _C_h_o_l_e_r_a_.
How to prove a new idea in scientific research?
draw a conclusion think of a method collect results make a question find a problem analyse the results find supporting evidence
draw a conclusion
Prevention of Cholera
Careful—reading:
Read the passage and number these events in the order that they happened.
2 John Snow began to test two theories. 1 An outbreak of cholera hit London in 1854. 4 John Snow marked the deaths on a map.
西非地区埃博拉疫情“严重且反常”，是“近40 年来这类疫情最复杂的一次暴发”。
What other infectious diseases do you know?
For example: When you eat some food that is not fresh……
You may feel…
He announced that the water carried 7 the disease.
3 John Snow investigated two streets where the outbreak was very severe.
8 King Cholera was defeated. 5 He found that most of the deaths
water B. John Snow was a well-known
doctor in London C. the source of all drinking water
should be examined D. How John Snow found the cause of the cholera and defeated it.
Ebola virus
埃博拉病毒是引起人类和灵长类动物发生埃博拉 出血热的烈性病毒，其引起的埃博拉出血热（ EBHF）是当今世界上最致命的病毒性出血热， 感染者会恶心、呕吐、腹泻、肤色改变、全身酸 痛、体内出血、体外出血、发烧等。
病毒可透过与患者体液直接接触，或与患者皮肤 、黏膜等接触而传染或通过飞沫传播 。
John Snow defeats “king cholera”
What can you learn from the title? 人物： 事件：
defeatsnded her as her personal physician
Queen Victoria
What was the cause of this illness? How did John Snow find it out?
Skim the text and choose the main idea of the text.
1. The passage mainly tells us that _D___. A. the cause of cholera was polluted
Pre-reading
What do you know about infectious diseases ?
SARS
AIDS/SARS/Bird flu / TB (肺结核)/Ebola virus
can be spread easily. may do great harm to people. are difficult to cure.