Fewer than 1 in 1,000 people who have been vaccinated or previously infected with COVID-19 were hospitalized with a new breakthrough infection, Mayo Clinic research finds. The study, which is ...

A longitudinal study finds that older adults who recovered from COVID-19 mount weakened non-spike-specific Th1 CD4+ T cell ...

Find out about the COVID-19 vaccines, the benefits of COVID-19 vaccination and the possible side effects.

Latest on cases, vaccines, masks and breakthrough infections This page updates monthly. Last update: Friday, Jan. 6, 12:33 p.m. Wondering about the state of Minnesota’s COVID-19 outbreak?

The CDC forecasts that the new wave of COVID cases could top previous peaks by January as the demand for at-home test surges. AP Photo/Matt Rourke NEW YORK -- As Americans brace for the possibility of ...