Paul Sax is an infectious-disease physician and professor at Harvard Medical School. Even so, when Sax’s kids asked him whether they should get the updated COVID...
And there it is, the first trickle of data to confirm it. In the eyes of vaccinated immune systems, Omicron looks like a big old weirdo—but...
Vaccines don’t last forever. This is by design: Like many of the microbes they mimic, the contents of the shots stick around only as long as...
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