full transcript
"From the Ted Talk by Romina Libster: The power of herd immunity"

Unscramble the Blue Letters

Let me show you something. iinmgae for a mmoent that we are in a city that has never had a case of a particular disease, such as the measles. This would mean that no one in the city has ever had contact with the disease. No one has natural defenses against, nor been vaccinated against mealess. If one day, a person sick with the measles appears in this city the disease won't find much resistance and will begin spreading from person to person, and in no time it will disseminate throughout the cinomumty. After a certain time a big part of the population will be ill. This happened when there were no veinccas.

Open Cloze

Let me show you something. _______ for a ______ that we are in a city that has never had a case of a particular disease, such as the measles. This would mean that no one in the city has ever had contact with the disease. No one has natural defenses against, nor been vaccinated against _______. If one day, a person sick with the measles appears in this city the disease won't find much resistance and will begin spreading from person to person, and in no time it will disseminate throughout the _________. After a certain time a big part of the population will be ill. This happened when there were no ________.

Solution

  1. measles
  2. community
  3. imagine
  4. vaccines
  5. moment

Original Text

Let me show you something. Imagine for a moment that we are in a city that has never had a case of a particular disease, such as the measles. This would mean that no one in the city has ever had contact with the disease. No one has natural defenses against, nor been vaccinated against measles. If one day, a person sick with the measles appears in this city the disease won't find much resistance and will begin spreading from person to person, and in no time it will disseminate throughout the community. After a certain time a big part of the population will be ill. This happened when there were no vaccines.

ngrams of length 2

collocation frequency
whooping cough 4
herd immunity 4
people died 3
risk groups 3

Important Words

  1. appears
  2. big
  3. case
  4. city
  5. community
  6. contact
  7. day
  8. defenses
  9. disease
  10. disseminate
  11. find
  12. happened
  13. ill
  14. imagine
  15. measles
  16. moment
  17. natural
  18. part
  19. person
  20. population
  21. resistance
  22. show
  23. sick
  24. spreading
  25. time
  26. vaccinated
  27. vaccines