You know the usual ... any peer reviewed medical journal, the centers for disease control, or credible research institute.
Certainly not a website titled
www.stopmandatoryvacc .....
The internet is a blessing and a curse. Never before has humanity had so much information on demand. At the same time, it provides a veritable megaphone to every clown and their mother to express their unmitigated, unfiltered, baseless opinion.
Do you believe 100% of what you read on the internet? How about every half-cocked documentary you see on TV?
Seriously man, you'd think this would be a nobrainer.