KP.3 variant, part of FLiRT group, presents wide array of symptoms from mild to severe. KP.2, another major variant of COVID, currently accounts for 22.5% of COVID cases in the US. KP.3 is very similar to JN.1 and only has two changes in spike compared to JN.1 variant of COVID. KP.3 variant, part of FLiRT group, presents wide array of symptoms from mild to severe. KP.2, another major variant of COVID, currently accounts for 22.5% of COVID cases in the US. KP.3 is very similar to JN.1 and only has two changes in spike compared to JN.1 variant of COVID. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle