The latest omicron subvariants could cause a surge of breakthrough infections and reinfections, a new study finds.

The study did not look at hospitalization, but experts believe the omicron booster shots will provide strong protection against severe outcomes.

Shortly after new omicron Covid boosters were introduced, the ‘Scrabble’ variants emerged. Experts weigh in on how the updated vaccines may fare against them.

The FDA pushed back against two independent studies that found the new boosters don’t trigger a better immune response than the old shots.