According to the Infectious Diseases Society Of America (IDSA), the proportion of illnesses caused by KP.2 is rapidly increasing. The other FLiRT variant, KP 1.1 is also circulating in the US.

FLiRT, a group of new Covid variants in the Omicron JN.1 lineage, is spreading in the US. KP.2 and KP 1.1 are more infectious than earlier Omicron variants, which, however, have similar side effects

The FLiRT variant, a group of new Covid-19 variants belonging to Omicron's JN.1 lineage, is rapidly spreading in the US. Variants KP.2 and KP 1.1, considered more infectious than previous Omicron variants,

The other FLiRT variant is KP.1.1 which is also circulating in the US but is less widespread than KP.2. It currently accounts for about 7.5 per cent of infections nationwide, per the CDC.