‘I Need an Army’: Across America, Schools Cram for Their Covid Tests

Some districts have established robust virus testing programs, but many others are struggling.

‘I Need an Army’: Across America, Schools Cram for Their Covid Tests

Some districts have established robust virus testing programs, but many others are struggling.

The U.S. Is Lifting Travel Restrictions for Visitors. What Do the New Rules Mean?

The Biden administration will allow vaccinated international travelers to enter the United States, including those from previously banned countries. Details remain to be worked out, but here is what we know so far.

Curtains Up! How Broadway Is Coming Back From Its Longest Shutdown.

Determined to reopen, crews are dusting off spotlights, dancers are relearning steps, and everyone is testing, testing, testing as theater seeks to rebound from the devastating pandemic.

Opinion | Why Provincetown’s Response to Its Covid Outbreak Was So Effective

The public health department’s approach to contact tracing shows a better way to monitor the disease.

Opinion | Show Me the Data!

A lack of systematic evidence has kept scientists one step behind in the pandemic.

Crowded Events. No Masks. Then a Coronavirus Diagnosis for Gov. Abbott of Texas.

The announcement that Gov. Greg Abbott had tested positive for the coronavirus came amid a pitched battle over public health measures in schools and a new surge in hospitalizations.

‘It’s Nowhere Near Over’: A Beach Town’s Gust of Freedom, Then a U-turn

Provincetown, Mass., the quirky community at the tip of Cape Cod, thought it was safe to return to prepandemic partying. It wasn’t.

Opinion | If We Must Wear Masks Again, We Need a Smart Approach

It must be made explicitly clear to the public how measures like mask mandates will cut transmission and can be used to incentivize vaccinations.

In Louisiana, Vaccine Misinformation Has Public Health Workers Feeling ‘Stuck’

Facing deep mistrust stoked by rampant conspiracy theories, local health officials are fighting for influence when the only sure strategy for beating back the virus is getting more people vaccinated.

As Delta Risk Looms, New York City Scales Back Covid Monitoring

The positive test rate in the city has crept up near 1 percent in recent days.

Birthday Parties as Virus Vector

Just how much Covid was spreading behind closed doors last year? Quite a lot, as a new study with a simple yet creative approach found out.

Birthday Parties as Virus Vector

Just how much Covid was spreading behind closed doors last year? Quite a lot, as a new study with a simple yet creative approach found out.

Covid Proved the C.D.C. Is Broken. Can It Be Fixed?

The pandemic revealed the glaring weaknesses of the world’s premier public health agency — and just how much work it would take to reform it.

Why Apple and Google’s Virus Alert Apps Had Limited Success

The virus-tracing effort raises questions about the power of Big Tech to set global standards for public health tools.