Tracking the Variants

The Centers for Disease Control and Prevention (CDC) have been closely monitoring two new COVID-19 variants, known as KP.2 and KP.1.1, since the beginning of 2024. These variants, collectively dubbed “FLiRT” due to their mutations, have been gaining traction and pose a potential threat to a summer surge.

Rising Prominence

Since their discovery, both KP.2 and KP.1.1 have been steadily increasing in prominence. Recent data indicates that KP.2 is now the dominant strain in the United States, accounting for nearly a quarter of sequenced tests. KP.1.1, on the other hand, makes up approximately 8% of cases as of the end of April.

Relationship to Omicron

Both FLiRT variants are sublineages of the JN.1 lineage of the Omicron variant, which has been the primary COVID variant for approximately three years. Health officials note that these new variants closely resemble JN.1, with early data suggesting only minor changes in their spike proteins.

Concerns for a Summer Surge

The emergence of these variants raises concerns about a potential resurgence of COVID-19 cases, particularly during the summer months. As KP.2 becomes increasingly prevalent and KP.1.1 continues to circulate, it is crucial to remain vigilant and adhere to public health guidelines to mitigate the spread of the virus.

 Remaining Vigilant

While the FLiRT variants share similarities with the Omicron variant, their unique mutations warrant continued monitoring and research. By staying informed and following recommended precautions, we can help prevent a surge in COVID-19 cases and protect public health.