For 10,000 years, humanity suffered from the scourge of smallpox. The virus killed almost a third of its victims within two weeks and left survivors horribly scarred. Thanks to a Buddhist nun, a boy, a cow, a dairymaid and physician Edward Jenner — who first stopped the spread of this disastrous disease, to make us smallpox-free today.
Watch a video about the deadly smallpox virus and choose the best answer for each question.
1. How did the smallpox virus infection spread most frequently?
a. Through the air
b. Through the soil
c. Through blood
d. Through feces
2. What percentage of infected people would die after smallpox virus infection?
3. What percentage of people would die after variolation?
4. What did they use in the 1700s to inoculate healthy people for variolation?
a. Pus from the utters of a cow
b. Pus from a lymphnode of an infected patient
c. Pus from scabs of an infected patient
d. Pus from the fresh sores of an infected patient
5. How intense were the clinical symptoms of cowpox as compared to smallpox in humans?
a. More intense
b. Less intense
c. Same intensity
d. We cannot compare them as they are caused by two different viruses