The 1st vaccine, Salk, was an injection. They came out with the Sabine on the sugar cubes just a few years later. Parents were wise to be scared of polio. It's a devastating disease. Can you imagine living like this?
People died from measles, too, but the survivors don't have the crippling of polio. Measles is so easy to avoid. The chances of having a problem from the vaccine are minuscule compared to the disease.

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“In a time of deceit telling the truth is a revolutionary act.”
― George Orwell

It's not over when you lose. It's over when you quit.