Quote:
Originally Posted by Ashartus
It's a lot more than 5% - if you look at the Stats Canada data for measles (for example) the incidence rate plummeted after the MMR vaccine became widespread. It went from 300,000 to 400,000 cases annually with no real changes in incidence from the 1920's to the 1960's, to about 10 cases annually.
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That's interesting. I could be wrong, but I'll dig up a few studies I have at home in paper copy to try to remember where I read this.