A new dominant omicron strain in the U.S. is driving up cases — and reinfections

For much of the pandemic, the only silver lining to coming down with a case of COVID-19 was that you likely wouldn't catch it again for a while (though there isn't exactly a definitive answer on how long that period of immunity typically lasts).

Increasingly, however, more people appear to be contracting the virus multiple times in relatively quick succession, as another omicron subvariant sweeps through the U.S.