A new study suggests that almost half of those hospitalized with COVID-19 have mild or asymptomatic cases.
Complete protection against infection has long been hailed as the holy grail of vaccination. It might simply be unachievable.
Reports of vaccines’ decline have been greatly overstated.
Delta is far from the last variant. But what shape the virus takes next depends on us.
We have the tools to keep Delta in check, but schools have to actually use them.
If you’re confused about what you can do right now, you should be.
You could probably sneak in a COVID-19 booster shot right now. But there are a few good reasons to hold off.
We can’t avoid the virus for the rest of our lives, but we can minimize its impact.
Everyone is bad at describing the vaccines, including me.
Robert Malone claims to have invented mRNA technology. Why is he trying so hard to undermine its use?
Cases of COVID-19 are rising fast. Vaccine uptake has plateaued. The pandemic will be over one day—but the way there is different now.
A few things still need to happen before the shots can be authorized for Americans younger than 12.
Some people can’t help but feel that masking while vaccinated is a regression—especially because this time, there’s no obvious off-ramp.
The country lifted all its COVID-19 restrictions just as Delta peaked. What happens next will tell us how well vaccines are working.
An infectious-disease doctor on what we know about the Delta variant and the risks that lie ahead.
The Delta variant is winning, for the moment, and the CDC’s coronavirus map shows that we’re failing to fight it.
Why not both?
Getting COVID-19 when you’re vaccinated isn’t the same as getting COVID-19 when you’re unvaccinated.
Our vaccines are extraordinary, but right now they need all the help they can get.
They’re not all anti-vaxxers, and treating them as such is making things worse.
Depending on where you live and your risk tolerance, vaccinated people are justified in either masking or unmasking indoors.
Only 35 percent of Arkansas is fully vaccinated, and with case rates rising, living there can feel like moving through a distorted reality.
COVID-19 vaccination rates have fallen off a cliff. Will it take a deadly summer surge to change things?
For America as a whole, the pandemic might be fading. For some communities, this year will be worse than last.
Doctors have found a concerning link between the rare pediatric complication known as MIS-C and a syndrome related to tampon use.
Lumping all breakthroughs together, regardless of symptoms, miscasts what our COVID-19 vaccines can do.
The pandemic was a big social experiment that sent asthma attacks plummeting.
Vaccinated America is on track to real safety. Unvaccinated America still faces a real danger from Delta.
Weighing the balance of risks is a shade more challenging when it affects the youngest among us.
Vaccines are still beating the variants, but the unvaccinated world is being pummeled.
The variants are spreading faster, but they don’t necessarily have incentive to kill more often.
A vaccinated American’s guide to traveling this summer
Persistent hype around mRNA vaccine technology is now distracting us from other ways to end the pandemic.
There’s no way of knowing how bad things will get in the U.S. In a way, that’s a luxury.
We understand how this will end. But who bears the risk that remains?
The value of masks is falling. But it may rise again.
Post-vaccination infections reveal how effective vaccines are—and which variants are sneaking past our defenses.
Our view of this crisis has been blurry from the beginning.
It’s time for more weapons in the shots-versus-virus arms race.
The pandemic’s mental wounds are still wide open.
As Americans abandon masks, the world is suffering around them.
Those waiting for an organ transplant are at risk of contracting the coronavirus whether they choose to avoid the health-care system or to interact with it.
The reputation of all COVID-19 vaccines hinges on improving perceptions of the Johnson & Johnson shot.
To reach the remaining holdouts, America’s approach to vaccine distribution is going hyperlocal.
Jewish people were blamed for spreading disease, and considered expendable victims.
Months of exuberant hand-sanitizing and social isolation during the pandemic have changed our exposure to microbes, in ways good and bad.
Readjusting our ideas about what’s safe is going to take time.
The agency’s new guidelines are too timid and too complicated.
Headaches, eye pain, nausea—her symptoms began last spring. No one knows exactly why, except that the pandemic is to blame.
What if a single vaccine could protect us against SARS, MERS, COVID-19, and every other coronavirus-related disease, forever and ever?
Even as cases drop among vaccinated Americans, the coronavirus still can spread among unvaccinated people—who will be disproportionately children.
The notion that lockdowns increased the rate of death by suicide last year has become common knowledge. It’s not backed up by data.
We still don’t know who’s most at risk of getting the Johnson & Johnson vaccine blood clots.
So are theories to explain it.
Some people’s bodies aren’t set up for vaccines.
Concerns about blood clots with Johnson & Johnson underscore just how lucky Americans are to have the Pfizer and Moderna shots.
Public-health leaders in rural America are turning toward the next and more difficult stage of the nationwide vaccination campaign: persuasion.
A pause is just that—a pause—in which health officials can reevaluate the data at hand.
One of COVID-19’s most persistent and mysterious problems finally has some treatments.