As the vaccines have rolled out, many experts have strenuously rejected the idea that there’s any “best” vaccine. “The best vaccine is the one that goes in your arm,” said Mary Hayney, a professor at the University of Wisconsin–Madison School of Pharmacy who researches vaccination. “I truly believe that there is not a big difference among the vaccines, or a discernable difference. Whatever one is offered to you, take it.” (Again, Hayney spoke to Slate before the latest J&J news.)
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