Data from the CDC revealed the emergence of a new set of COVID-19 variants - KP.2 and KP.1.1 - dubbed FLiRT, through wastewater surveillance.
Variant KP.2, from April 14 to April 27, constituted 25 per cent of cases in the US. Meanwhile, the KP.1.1 FLiRT variant constituted 22 per cent of Covid cases in the US in the two-week period.
Experts reportedly warned about the concerning features of FLiRT variants, particularly changes in the spike protein.
Symptoms include that of JN.1, which are fever, cough, sore throat, congestion or runny nose, brain fog, loss of taste, among others.
CDC is monitoring the situation and reports quoting the agency said that there are "no current indicators" that KP.2 is worse than other Covid strains.