A New Covid Mystery

A New Covid Mystery

Why haven’t cases started rising again in the U.S.? By David Leonhardt To many people’s surprise — including mine — new Covid-19 cases in the U.S. have not begun to rise. Over the past two weeks, they have held roughly steady, falling about 1 percent, even...

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Omicron Is in Retreat

Omicron Is in Retreat

What’s next? By David Leonhardt The latest Omicron developments continue to be encouraging. New Covid-19 cases are plummeting in a growing list of places. The percentage of cases causing severe illness is much lower than it was with the Delta variant. And vaccines —...

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How Does This End?

How Does This End?

Thinking about Covid and normalcy. By David Leonhardt ~ photo above: Dr. Robert M. Wachter. Credit...Stephen Lam/San Francisco Chronicle Among the Covid experts I regularly talk with, Dr. Robert Wachter is one of the more cautious. He worries about “long Covid,” and...

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Covid, in Retreat

Covid, in Retreat

New cases in the U.S. have fallen by more than a third in the past month. By David Leonhardt That Two Month Cycle Covid-19 is once again in retreat. The reasons remain somewhat unclear, and there is no guarantee that the decline in caseloads will continue. But the...

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One in 5,000

One in 5,000

The real chances of a breakthrough infection. By David Leonhardt The C.D.C. reported a terrifying fact in July: Vaccinated people with the Delta variant of the Covid virus carried roughly the same viral load in their noses and throats as unvaccinated people....

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More Covid Mysteries

More Covid Mysteries

There’s much to learn about how the virus spreads. By David Leonhardt Consider these Covid-19 mysteries: In India — where the Delta variant was first identified and caused a huge outbreak — cases have plunged over the past two months. A similar drop may now...

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