Do Covid-19 booster shots work, how Pfizer-BioNTech named "Comirnaty," and more.

Do Covid-19 'booster' shots really work? Here's what early data shows. (Monday, August 23)

Israel was the first country in the world to begin administering widespread "booster" doses of Pfizer-BioNTech's Covid-19 vaccine—and according to the nation's health ministry, early data suggests the boosters have significantly improved protection against infection and severe illness.

Should you travel during the delta surge? Here's what experts say. (Tuesday, August 24)

As Covid-19 cases surge across the United States due to the delta variant, many people are considering whether to cancel their late summer travel plans. According to infectious disease experts, the decision should depend on where you're going and what circumstances are like there.

How Pfizer-BioNTech named 'Comirnaty' (and 4 names that didn't make the cut) (Wednesday, August 25)

With full approval from FDA, the Pfizer-BioNTech vaccine also has a new name: Comirnaty. Here's how Pfizer-BioNTech brainstormed the name—as well as the mouthful of names that didn't make the cut.

Gawande: What Costa Rica can teach America about living longer (Thursday, August 26)

Writing for the New Yorker, Atul Gawande explains how Costa Rica bolstered its life expectancy from 55 in the 1950s to nearly 81 today—above the United States' life expectancy. Here are the nation's secrets to success.

'It could get significantly worse': Could even more dangerous variants follow delta? (Friday, August 27)

The delta variant is one of the most virulent coronavirus variants that have emerged over the course of the pandemic. As it causes surges in Covid-19 cases around the world, many public health experts are concerned it could "morph into something more formidable."