The year I was born, there were 57,628 cases of polio in the United States. My childhood best friend was a polio victim who wore metal braces on his legs.
We lined up in the school gym to get polio vaccines -- first the Salk killed-virus version, then the Sabin weakened-virus dose.
Widespread vaccination works. The disease is now regarded as "eliminated" in the United States and indeed most of the world.
But it is not gone. It waits for us to be stupid.
@steve
There is a measles outbreak right now among the students of Moscow State University right now and there is shortage of vaccines in Moscow.
These deceases are coming back all around the world as people get convinced that vaccination its something unnecessary or even dangerous and the whole COVID thing didn't improve the situation to say the least, I think it made people trust the vaccines even less 😫