The Centers for Disease Control is warning you of a new variant of COVID-19 that could test your immunity.

The agency announced that the variant KP.2, also known as FLiRT, has become the most dominant of the 18 variants tracked by the CDC’s wastewater surveillance data, accounting for nearly 25 percent of all of the cases. According to WebMD, Yale School of Public Health Dean Megan L. Ranney, MD, says the changes in the virus itself, the lower vaccination rate, and the lower efficacy of the current booster may make it a higher likelihood that you can get re-infected with the new COVID-19 variant. If it is right for you, the CDC recommends you stay up to date on your vaccinations, especially if you are above the age of 65 or immunocompromised. The symptoms of the FLiRT variant are similar to past strains of COVID-19, including fever, cough, sore throat, congestion, headache, muscle aches, difficulty breathing, fatigue, and brain fog. 

Earlier this year, the CDC updated its guidelines surrounding COVID-19, saying you no longer have to isolate for five days after a positive test. The new rules, which include staying at home if you are sick, practicing good hygiene, and improving air quality, fall in line with what is suggested for people dealing with other respiratory illnesses.