Pfizer says this season’s COVID shot boosts immune responses fourfold
Text settings Story text Size Small Standard Large Width * Standard Wide Links Standard Orange * Subscribers only Learn more Minimize to nav 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 Robert F. Kennedy Jr., an ardent anti-vaccine activist who has unilaterally restricted access. Prior to the second Trump administration, all Americans ages 6 months and older had access to the vaccines. But under Kennedy, the…
