WASHINGTON (AP) — U.S. health regulators have given full approval to Pfizer’s COVID-19 pill Paxlovid. Thursday’s action means the drug has now been fully vetted by the U.S. government and can remain on the market indefinitely. Millions of Americans have received Paxlovid since it was granted emergency authorization in late 2021. It’s become the go-to treatment for adults and older children. The FDA’s approval is only for adults who are at high risk of hospitalization or death from COVID-19. The drug is still available for children under emergency use.