by Brenda Baletti, Ph.D. Different batches of the Pfizer-BioNTech COVID-19 vaccine distributed in the U.S. had very different rates of serious adverse events (SAEs), according…
October 23, 2025
by Brenda Baletti, Ph.D. Different batches of the Pfizer-BioNTech COVID-19 vaccine distributed in the U.S. had very different rates of serious adverse events (SAEs), according…