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The effectiveness of COVID-19 vaccines in preventing COVID-19 illness and reducing severe outcomes, including hospitalizations and deaths.
Mortality for some infectious diseases did fall before vaccines became available largely because of better nutrition, sanitation, and clinical care, but that trend was uneven across diseases, places, ...
Major insurer groups have pledged to keep covering and other ‑recommended vaccines without patient cost‑sharing through the end of 2026, even as federal advisory guidance and authorizations narrowed e...
Randomized clinical trials and subsequent large-scale observational studies have repeatedly shown that substantially reduce symptomatic disease, hospitalization, intensive care use, and death, while h...
The current centers on newly formulated 2025–2026 vaccines targeted to circulating Omicron JN.1-lineage viruses and emphasizes individual decision-making for most people, while stressing prioritized b...
–branded posts that circulated claims about the and about COVID‑19 echoed a set of themes that were repeatedly subject to independent fact‑checks: allegations of widespread mail‑in voter fraud and sto...
Publicly available "raw" research data for Zostavax exists in the form of clinical trial registries, regulatory reviews, peer‑reviewed trial reports and post‑licensure observational studies, but indiv...
Observational comparisons of vaccinated and unvaccinated populations are fertile ground for misleading conclusions unless a range of methodological biases are actively sought and addressed; the litera...
The 2025–2026 updated COVID-19 vaccines (including LP.8.1-adapted formulations) produce robust antibody responses and real-world protection against symptomatic infection and hospitalization, and publi...
Multiple independent surveillance and laboratory reports find that H3N2 subclade K remains susceptible to the licensed influenza antivirals now in clinical use, even as the variant has antigenically d...