Now that official COVID emergency declarations have ended, how should people evaluate their risk of SARS-CoV-2? That's the subject of our frequently asked questions offering.
Two U.S. intelligence agencies reportedly support the lab leak theory — with low-to-moderate confidence. No evidence has been shared. Scientists have strong evidence of animal spillover at a market.
Animals carry millions of pathogens. So it's a daunting task to find the one with the greatest potential to spark a pandemic. Now scientists are rethinking the way they hunt for that next new virus.
As we launch a series about spillover viruses — like SARS-CoV-2, which triggered a global pandemic, you may have a lot of questions. So do we — 7, to be exact, in the quiz below. See how you do.
For nearly three years, China has enforced incredibly strict rules to keep coronavirus transmission in check. But now they're facing a potentially deadly omicron surge.
New research points to a surprising way to stop spillovers of Hendra virus, which is harbored by bats. It's not often that it jumps to horses, then humans, but when it does, the result are brutal.
Sikhulile Moyo led the team that first identified omicron — and was dismayed by the world's reaction — blaming and blacklisting African nations. He's now a bit more optimistic.
"Ventilation is the way forward," says infectious disease doctor Abraar Karan of Stanford. Here's how to get better air flow at home, in schools and offices — even in gyms — to stave off COVID.
New versions of omicron are circulating in the United States and South Africa. Two new studies shed light on the potential for future surges — and the risk factor if you've already had omicron.
With COVID case counts falling and rising, testing is critical. But how many days after exposure should I test? And if I have symptoms but test negative, might the test not be accurate?
My 6-year-old has been exposed to SARS-CoV-2 at least four times and never tested positive. Many people fall into that category. Researchers have theories about why they've been able to ward it off.
That's how the so-called "deltacron" variant — a mashup of delta and omicron — came to be. This process of recombining tells us a lot about the possible past and future of SARS-CoV-2.
Studies on white-tailed deer in Pennsylvania and Ontario offer evidence that the mammals are a reservoir for the coronavirus. What are the implications for the course of SARS-CoV-2?
A new study documents that infected hamsters, imported from the Netherlands, passed the virus on to humans. Previously only minks had been identified as a source of animal-to-human transmission.