Difference Between Current Vacs vs Small Pox - It's Big

Ever wonder why they had to change the definition of vaccine at the CDC website? Curious how the current Vax differs from those that are tried and tested for decades? Jimmy Dore has world renowned experts Dr. Jay Bhattacharya and Dr. Martin Kulldorff to explain.
Full Jimmy Dore video here https://www.youtube.com/watch?v=S5Fxxrudk70
Dr. Jay Bhattacharya on Twitter: https://twitter.com/DrJBhattacharya
Dr. Martin Kulldorf on Twitter: https://twitter.com/MartinKulldorff