McCullough shares tweet Peter A. McCullough, MD, MPH™ @P_McCulloughMD No preclinical safety studies for genotoxicity, oncogenicity, or teratogenicity. Now billions of recipients are asking about long term side effects. Video shows shortcomings of rushed mRNA development. #courageousdiscourse @VigilantFox @TheChiefNerd 9:50 PM ∙ Mar 16, 2023 1,042Likes622Retweets