More than 12 million Americans have rolled up their sleeves for the Johnson & Johnson COVID-19 vaccine. Now, preliminary but promising data shows the single-shot vaccine appeared to work well against ...

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 ...

A third dose of the Pfizer/BioNTech COVID-19 vaccine can "strongly" boost protection against the delta variant -- beyond the protection afforded by the standard two doses, suggests new data released ...

The Centers for Disease Control and Prevention listed the COVID-19 delta variant as one of its "variants of concern" (VOCs) on June 15. According to the CDC, VOCs can be more contagious, more ...

NEW YORK CITY (WABC) -- With the holiday season in fast approaching, it seems the only thing that's moving faster is the positivity rate for COVID cases -- and that will mean some decision making, ...

WASHINGTON -- Many of the world's richest countries have spent the past year hoarding coronavirus vaccines, buying up enough doses to vaccinate their populations several times over and consistently ...

Multivariable analyses confirmed that vaccination remained associated with lower hospitalization risk in both periods after controlling for comorbid conditions. Compared with vaccinated patients, the ...

The Centers for Disease Control and Prevention listed the COVID-19 delta variant as one of its "variants of concern" (VOCs) on June 15. According to the CDC, VOCs can be more contagious, more ...