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

Europe Faces a Measles Outbreak

The New War on Bad Air

U.S. Health Officials Urge Vigilance as Ebola Spreads in Uganda

This Is Not the Monkeypox That Doctors Thought They Knew

Health Secretary Says States ‘Need to Work With Us’ on Fighting Monkeypox

W.H.O. Declares Monkeypox Spread a Global Health Emergency

Yes, Omicron Is Loosening Its Hold. But the Pandemic Has Not Ended.

Past Pandemics Remind Us Covid Will Be an Era, Not a Crisis That Fades

C.D.C. Internal Report Calls Delta Variant as Contagious as Chickenpox

Reaching ‘Herd Immunity’ Is Unlikely in the U.S., Experts Now Believe

Reaching ‘Herd Immunity’ Is Unlikely in the U.S., Experts Now Believe

What the History of Pandemics Can Teach Us About Resilience

The Pandemic and the Limits of Science

The Pandemic and the Limits of Science

C.D.C. Officials Shorten Recommended Quarantine Periods

Advice on Virus Transmission Vanishes From C.D.C. Website

U.S. Will Revive Global Virus-Hunting Effort Ended Last Year

The Coronavirus Isn’t the 1918 Flu. But Both Took Huge Tolls in N.Y.C.

‘A Smoking Gun’: Infectious Coronavirus Retrieved From Hospital Air