A new family of COVID-19 variants, referred to as “FLiRT,” has emerged and is now spreading in Australia. These strains, which include KP.2, KP.3, and JN.1.7, were first recorded five months ago and have quickly gained prominence, particularly in the United States. The name “FLiRT” is derived from specific mutations in the virus’s spike proteins.
While data on the variant’s prevalence in Australia is limited, indications from NSW Health reveal that FLiRT subvariants currently account for over half of COVID-19 cases in the state. Overall, COVID-19 infections are reportedly increasing across Australia, with health authorities noting a resurgence in cases.
In terms of transmissibility, FLiRT strains appear to be as contagious as other Omicron subvariants, though experts have found no significant differences in symptoms or severity of illness caused by these new variants. While it’s early in the evaluation of FLiRT, experts believe these subvariants may either continue to grow in prevalence or stabilise without fully dominating the landscape.
As research continues, the behaviour of the FLiRT variants and their implications for public health remain unfolding. Authorities express the need for ongoing caution and surveillance as they adapt to the evolving situation.