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

LOS ANGELES (KABC) -- People jumping the line to get a COVID-19 vaccine are hindering efforts to address health inequities. For example, the state's My Turn website allows one to enter an access code ...

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 ...

Amid the declining clinical severity of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and diminishing public uptake of annual coronavirus disease 2019 (Covid-19) vaccines, ...

You’re not imagining it: The rollout of COVID-19 vaccines in 2025 has not been like previous years. But the big thing to know is that despite initial restrictions, California has now opened up access ...