In countries without much sequencing, new versions of the Covid virus can go unnoticed. Scientists across Africa are collaborating to track them down.
Scores of plans to verify immunity are in the works. But there are even more questions about how they’ll use data, protect privacy—and who gets certified first.
A new study shows that concussions and other head traumas can have long-lasting effects on our health.
Bats likely gave it to a mystery animal that then gave it to people. We passed it on to minks. Where does it go from there—and could it come back to us?
Now that authorized versions are available, it’s tough to recruit volunteers for trials that might give them a placebo. But there are other options.
Eliminating Covid globally means navigating a minefield of competition, limited supply, and suspicion that some vaccines aren’t as good.
Two new studies are being hailed as proof that vaccinated people can doff masks and pod-hop worry-free. But not so fast.
Some viruses became endemic over time, circulating constantly, perhaps in a less lethal form. We’ll need a new game plan if this one sticks around.
The nation is a sequencing superpower. But without a federal strategy or enough funding, scientists can’t coordinate to track an evolving threat fast enough.
Johnson and Johnson’s vaccine can be delivered in a single dose, but it’s also slightly less effective. Who should get it?