Question REVIEW

1. Why was polio a scary disease?

a. There’s no cure and it’s contagious.

b. No one knew where it came from.

c. It is caused by an insect bite.

d. The medicine is very expensive.

2. Which of the following is NOT true about Dr. Jonas Salk’s polio vaccine?

a. It was the first vaccine developed for polio.

b. It was successful in reducing the number of polio cases.

c. It was made from dead polio viruses killed with formalin.

d. It was the only vaccine developed for polio.

3. Why is it important to follow the directions when making a vaccine?

a. Because a small mistake makes the vaccine take longer to work b. Because a small mistake can make the vaccine dangerous c. Because a small mistake gives the vaccine a bad taste d. Because a small mistake can cause a lot of waste

4. When were the first injections of the new polio vaccine given?

POLIO PEAKS: CASES AND DEATHS FROM 1910-1980

Below is a chart showing the number of polio cases and deaths in the USA between 1910-1980. Circle true or false for each of the following statements.

3. By 1980, there were no reported cases of polio. (true/false)

4. There were around 10,000 deaths from polio in the year 1930. (true/false)

1. The number of polio cases peaked in the year 1916. Peaked means it reached the highest number of cases. (true/false)

2. In the year 1940, there were more cases of polio than the number of deaths from polio. (true/false)

5. At its peak, there were more than 50,000 cases of polio. (true/false)

Did you know?

• The Grand Canyon is larger than the state of Rhode Island.

• The Grand Canyon is one of the most visited national parks in the United States. About 5.9 million people visit each year!

• Rock squirrels found in the Grand Canyon have bitten many visitors who came too close, trying to feed them.

• It would take between two-three weeks to raft from one end of the canyon to the other.