Some members of the CDC’s vaccine advisory panel have publicly questioned the safety and manufacturing of the shots, including raising a debunked theory that DNA contaminants in the vaccines are ...

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 ...

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

Health and Human Services Secretary Robert F. Kennedy Jr. revealed his agency will be cutting funding to mRNA development, calling the vaccine technology "ineffective" and claiming it poses more risks ...

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, ...