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Since You’re Already Getting a Flu Shot, Why Not One for Covid, Too?

The Vanishing Variants: Lessons from Gamma, Iota and Mu

The Coronavirus Has Infected More Than Half of Americans, the C.D.C. Reports

U.S. nursing home deaths appear to be at pandemic lows.

Covid Vaccines Did Not Protect Adolescents as Effectively During the Omicron Surge

The use of at-home coronavirus tests jumped during the Omicron wave, but disparities remain, a survey suggests.

A funding dispute with G.O.P. senators may complicate Biden’s efforts on antivirals and tests.

Vaccine protection against moderate illness waned among adolescents, new C.D.C. data suggest.

The Latest on Vaccines for Kids Under 5

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

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.

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

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

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.

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

A Surge in Hospitalized Young Children Infected With the Coronavirus