Pfizer says this season’s COVID shot boosts immune responses fourfold
via pfizer.com
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Pfizer and BioNTech report that their updated mRNA COVID-19 vaccine for the 2025–2026 season produced strong immune responses, boosting neutralizing antibody levels by at least fourfold in older people and those with underlying medical conditions. The positive results come as Americans face a confusing, state-by-state patchwork of access to the shots under the health secretary […]