Experts Raise “Serious Doubt” About COVID Vaccine Study Claiming mRNA Harms

A new study from Yale University researchers, that has yet to be peer-reviewed, rapidly circulated online among vaccine skeptics. The study said a small group of patients reported lingering symptoms similar to long COVID after receiving the Pfizer or Moderna mRNA COVID vaccine. E. John Wherry, PhD, the Richard and Barbara Schiffrin President’s Distinguished Professor and chair of Systems Pharmacology and Translational Therapeutics, urged caution at interpreting the findings. “When you do studies where you are comparing one cohort to another, there needs to be some rigorous criteria for who is included in a cohort,” he said. “From what I can tell, this is self-identified, and it is unclear what exactly that means.”