Questions about the COVID-19 shot abound as federal recommendations shift and medical groups issue clashing guidance.

Walensky is a professor at Harvard Medical School and served as the 19th director of the Centers for Disease Control and Prevention. Once clinical trials showed that Covid-19 vaccines were safe and ...

Six years after early vaccine trials, the legacy of COVID-19 shots reflects science, public debate, and how perceptions ...

Certain individuals with cancer were significantly more likely to survive if they received a COVID-19 mRNA vaccine, researchers at the University of Texas MD Anderson Cancer Center reported. This ...

An early Moderna COVID‑19 trial has resurfaced six years on, amid ongoing debate over vaccine risks, guidance and public trust.

CDC panel advises tracking COVID-19 vaccine injuries by establishing new ICD-10 codes and clinical guidelines to improve diagnosis and care.

A registry study across 14 Japanese clinics analyzed 179 cases of post-COVID-19 vaccination syndrome (PCVS) and identified ...

Several states have issued their own guidance about COVID-19 vaccines since the FDA released its 2025-2026 formula approvals on Aug. 27, significantly restricting who can access the vaccines for the ...

A group of experts that advises the US Centers for Disease Control and Prevention on its vaccine recommendations has suspended an anticipated push to stop recommending mRNA-based Covid-19 vaccines ...

Pregnant women looking for a COVID-19 vaccine may find it harder to get one this year. While top medical societies recommend pregnant women get a COVID shot to protect both themselves and their unborn ...

Add Yahoo as a preferred source to see more of our stories on Google. With a little help, your immune cells can be potent tumor killers. Steve Gschmeissner/Science Photo Library via Getty Images The ...

As of November 2025, some healthcare organizations conclude that COVID-19 vaccines have no impact on fertility. But some researchers agree that more studies are needed to understand potential ...