Various studies show people have better immune responses and produce more antibodies with a combination of the AstraZeneca, BioNTech or Moderna vaccines.
Every year many animal species go extinct, never to be seen again. But some species are rediscovered as well. While that's good news, it doesn't mean everything's just fine with the returnees.
The two hippos at Antwerp Zoo tested positive for the coronavirus after a vet noticed their noses were "expelling snot." The huge animals, who are mother and daughter, are not in great peril.
Researchers think they know why some people developed blood clots after taking the AstraZeneca or Johnson & Johnson jabs. They may also have a solution.