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C.D.C. Considers Ending 5-Day Isolation Period for Covid

C.D.C. Dismisses Airborne Transmission of Monkeypox. Some Experts Disagree.

Mask Ruling Underscores Deep Split in Attitudes

President Biden Pressures Congress for Emergency Covid Funds

U.S. caseloads fall below the Delta peak.

Criticized by Senators, U.S. Health Officials Defend Omicron Response

When Can the Covid Masks Finally Come Off?

Is the Coronavirus Getting Better at Airborne Transmission?

A survey finds more U.S. parents say they’re willing to vaccinate their children.

U.S. schools with mask requirements saw fewer outbreaks, the C.D.C. found.

Covid Vaccine Prompts Strong Immune Response in Younger Children, Pfizer Says

Why Not Just Tell Everyone to Wear Masks?

C.D.C. Director Warns of a ‘Pandemic of the Unvaccinated’

A Glut of Chinese Masks Are Driving U.S. Companies Out of Business

‘We have all longed for this moment’: Vaccinated Americans now may go without masks in most places, the C.D.C. says.

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

Vaccinated Americans don’t need masks outdoors in small groups or when biking and running, the C.D.C. says.

When do we have to wear a mask outside? The C.D.C. says less often, and here’s how and why.

Vaccinated Americans don’t need masks outdoors in small groups or when biking and running, the C.D.C. says.

Can Vaccinated People Spread the Virus? We Don’t Know, Scientists Say.