Have you ever heard of polio? Polio is a powerful disease. It can make people paralyzed. More kids got it than adults. If you were a kid and living in the 1940s and 1950s there would be a pretty good chance you would get polio. Today in history Jonas Salk announced his polio vaccine for America to use. He published in the year 1953. Jonas tested the vaccine before it was safe to use it for all for America. He first tested on his wife and his three sons. He won a congressional gold award. His whole name is Jonas E. Salk. His middle name is Edward. I am so happy that Jonas invented the vaccine — it saved lots of American people’s life.
If you want to read a good chapter book about polio one I recommend Small Steps: The Year I got Polio by Peg Kehret. It is a autobiography.