Loading...

And just before we get off the chair about vaccines, and William to address what you're talking about too with the vaccines, the polio, the polio vaccines, I sometimes use this one as a bit of an example. By 1957, if you look at 1967, annual cases dropped from 58,000 to 5,600. By 1961, only 161 cases remained. This is all a result of folks inactivated polio vaccine. And of course, there's later a new type of vaccine come out. There's also the Cutter incident.