The same mRNA technology used in COVID-19 vaccines could help treat cancer

CDC investigating cases of heart inflammation in teens, young adults who got two-shot COVID vaccine. Here's what we know.

‘Being human again’: New York is taking its biggest leap yet toward a new normal.

US to share 80 million vaccine doses with the world; US infections down in all 50 states: Latest COVID-19 updates

Fauci defends CDC's roundabout on mask mandates amid confusion from new guidance

CDC chief defends eased mask mandate, says new schools guidance coming soon: Live COVID-19 updates

New mask rules trust Americans will be honest about vaccine status. Experts say they'll lie.

723 Epidemiologists on When and How the U.S. Can Fully Return to Normal

What Would It Take to Vaccinate the World Against Covid?

CDC lifts indoor mask guidelines for fully vaccinated people. What does it actually mean?

Vaccinated Americans now may go without masks in most places, the C.D.C. said.

New CDC guidelines say vaccinated Americans can now ditch the masks, with a few exceptions: Live COVID-19 updates

CDC panel recommends Pfizer's COVID-19 vaccine for kids as young as 12

A Misleading C.D.C. Number

C.D.C. Chief Defends Pandemic Guidance as Impatience Mounts

Rand Paul and Anthony Fauci argue over theories about COVID-19's origin

Most unvaccinated adults don't want the shot; Pfizer vaccine OK'd for teens; bodies buried in India's Ganges River: Live COVID-19 updates

A New Covid Dilemma: What to Do When Vaccine Supply Exceeds Demand?

The world may need to learn to live with the virus