The current strains of COVID are more infectious and more dangerous than the 2019 strain was. Up until the end of 2023, the only reason we didn't hear about it was because the vaccines were effective against them (and the corporations want to pretend that it's been over for several years now). The latest strain is resistant to vaccinations from before the end of September, and the US just saw the second biggest spike in COVID cases since 2019, with an estimated peak at 2 million daily new infections on the 11th.

Just because big businesses say that the pandemic is over so everybody goes back to work and buying stuff doesn't mean that the pandemic ended. There are plenty of immune compromised people who never left quarantine because they can't with COVID still around. The rest of society simply decided that their deaths were less important than going back to drinking in crowded bars.