COVID-19 vaccination before or during pregnancy was linked to lower risk for severe maternal disease in the delta or omicron variant periods, ...

The delta variant is fueling the COVID-19 surge in the United States, but experts warn that a more dangerous variant could emerge if more Americans don't get vaccinated. Delta is the most recent of ...

The CDC said that where coronavirus transmission is high, vaccinated people should wear masks indoors in public, especially at K-12 schools.

Hospital officials said the vast majority of those staff members were vaccinated and most were cases of the highly contagious Delta variant.