Vaccines

New Study of Billions of mRNA Vaccine Shots Confirms Their Safety and Efficacy

The study also reviews the great potential of mRNA vaccines to treat influenza, RSV, cancer, and autoimmune diseases.

Ronald Bailey | 7.1.2026 4:50 PM

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(Adani Samat/Midjourney)

More than 13 billion doses of mRNA vaccines have been administered globally since the rollout in the United States of COVID-19 shots in December 2020 via Operation Warp Speed under the first Trump Administration.

A just-published comprehensive new review in The Lancet takes stock of what researchers around the world have learned during the past six years about the safety and efficacy of those billions of mRNA vaccine shots. The analysis by an international team of researchers takes into account the data from randomized vaccine trials, post-authorization surveillance,........

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