I did some interesting reading about the polio virus that struck people, especially children, in the 1950's. There was a massive uncontested public immunization effort to vaccinate everyone and the virus was contained. So tragic that humans have to face these invisible destructive and deadly viruses but thanks to science to overcome them.

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Retired teacher — Big Picture Wisdom, activist, author 4 e-books: social media teens, eco-fiction ecology https://helpfulmindstreamforchanges.com

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