Yes, life can be tough. Ive lived with incurable auto immune issues since I was a kid. Still, I wouldn't expect every person on earth to take a preventative treatment to avoid my circumstances. That's not medicine or science. It's business and politics.
Furthermore, the quote I posted had nothing to do with down playing the severity of polio. It did however have to do with down playing how much of a "raging epidemic" it was. Polio is on the rise these days. Guess why?