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How Far Should a Coronavirus Test Go?

Jeremiah Stamler, Who Found Ways to Curb Heart Disease, Dies at 102

The ‘stealth’ Omicron variant is no cause for alarm, but it could slow down the decline in cases.

‘Stealth’ Variant No Cause for Alarm, but Could Slow Case Decline

A new poll asks: Why do some vaccinated people not get boosters?

As Covid Shots for Kids Stall, Appeals Are Aimed at Wary Parents

A new poll asks: Why do some vaccinated people not get boosters?

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

As Omicron Crests, Booster Shots Are Keeping Americans Out of Hospitals

Booster shots are instrumental in protecting against Omicron, new C.D.C. data suggest.

Their DNA Hides a Warning, but They Don’t Want to Know What It Says

The C.D.C.’s New Challenge? Grappling With Imperfect Science

Just over a third of Americans think the U.S. pandemic response is ‘going well,’ a new poll says.

The C.D.C.’s New Challenge? Grappling With Imperfect Science

Behind the mRNA vaccines lie years of research failures and happy accidents.

Halting Progress and Happy Accidents: How mRNA Vaccines Were Made

Unvaccinated women with Covid are more likely to lose fetuses and infants, Scottish data show.

Senate Panel OKs Califf Nomination for F.D.A. Chief

Alan Scott, Doctor Behind the Medical Use of Botox, Dies at 89

Flu vaccination rates are low, especially among older Americans.

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

A popular at-home test detects most infectious Omicron cases, a study suggests.

California hospitals find that Omicron causes fewer hospitalizations and shorter stays.

Medicare Proposes to Cover Aduhelm Only for Patients in Clinical Trials

At-home virus tests are inaccessible to blind people.

‘People Need to Be Reminded About Flu’

At-Home Coronavirus Tests Are Inaccessible to Blind People

Starting later this week, some at-risk Americans become eligible for a 4th Covid shot.

As Omicron spreads, the C.D.C. seeks to clarify its message on testing and isolation.

A Surge in Hospitalized Young Children Infected With the Coronavirus

If you got Pfizer’s vaccine, seek a booster 5 months after the second shot, not 6, the C.D.C. recommends.

With no way to identify Omicron and Delta patients, doctors struggle with treatment decisions.