The first updated COVID-19 boosters are days away from going into the arms of Americans. But the expedited way in which they're being rolled out, and unknowns on how well they'll work, have left many people leery and full of questions.
Why it matters: Experts generally agree COVID vaccinations were in need of an update to target strains like Omicron that now account for the majority of U.S. cases. And the evidence suggests the reformulated Pfizer-BioNTech and Moderna shots should protect those at greatest risk from hospitalization and death.
