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

COLORADO, USA — There are 479 patients currently hospitalized with COVID-19 in Colorado as of Feb. 6, and the seven-day, moving average positivity rate decreased to 4.34%, according to the latest data ...

After receiving their COVID-19 vaccinations, attendees at a free COVID-19 vaccination equity clinic in Fountain on Friday, Feb. 19, 2021 receive vaccine reminder cards, issued in English and Spanish.

As Health and Human Services Secretary Robert F. Kennedy Jr.’s dismantling of federal vaccine policy continues to roil the Centers for Disease Control and Prevention, some Democratic-led states have ...

COMBRIAX is the world's first flu plus COVID combination vaccine to receive a positive CHMP opinion recommending marketing authorization and represents Moderna's fourth vaccine to receive a positive C ...

This is arguably where the potential is greatest. Conventional vaccines against flu and COVID require regular updating because the viruses mutate. And when the vaccine strain does not closely match ...

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 ...