Will your last COVID vaccine work against new 'FLiRT' variants?

(NEXSTAR) — Two new COVID-19 variants are circulating, posing a threat to a summer surge.The Centers for Disease Control and Prevention has been tracking the new variants, scientifically known as KP.2 and KP.1.1 since at least the start of 2024. They’ve been steadily growing in prominence ever since, and have garnered the nickname “FLiRT” because of their mutations.The latest data shows KP.2 is the dominant strain in the U.S., comprising almost 25% of the tests that have