New FLiRT COVID Variants Dominate Globally
FLiRT variants, including KP.2 and JN.1, show mutations that may enhance transmissibility but are not linked to increased severity.
Overview
- FLiRT variants are named for specific spike protein mutations: F456L, V1104L, and R346T.
- KP.2 is now the most common variant in the U.S., with JN.1 leading globally.
- Current vaccines are expected to offer some protection against these variants.
- COVID-related hospitalizations and emergency visits have not increased significantly.
- Experts will meet on June 5 to discuss new vaccine designs targeting these variants.