Doctors Are Puzzled by Heart Inflammation in the Young and Vaccinated
Weighing the balance of risks is a shade more challenging when it affects the youngest among us.
Our Essential Coronavirus Coverage
The 3 Simple Rules That Underscore the Danger of Delta
Vaccines are still beating the variants, but the unvaccinated world is being pummeled.
Why No One Is Sure If Delta Is Deadlier
The variants are spreading faster, but they don’t necessarily have incentive to kill more often.
The Dos and Don’ts of Hot Vax Summer
A vaccinated American’s guide to traveling this summer
The mRNA Vaccines Are Extraordinary, but Novavax Is Even Better
Persistent hype around mRNA vaccine technology is now distracting us from other ways to end the pandemic.
Expect the Unexpected From the Delta Variant
There’s no way of knowing how bad things will get in the U.S. In a way, that’s a luxury.
The Fundamental Question of the Pandemic Is Shifting
We understand how this will end. But who bears the risk that remains?
Farewell to Masks (For Now)
The value of masks is falling. But it may rise again.
What Breakthrough Infections Can Tell Us
Post-vaccination infections reveal how effective vaccines are—and which variants are sneaking past our defenses.