The strain is 'very, very similar' to the JN.1 variant from earlier this year.
The new KP.3 variant has climbed to 1 in 4 new
cases nationwide, the Centers for Disease Control and Prevention estimated Friday, making it now the dominant strain of the virus nationwide. KP.3's ascent comes as the CDC has tracked key metrics of spread from the virus now starting to trend up. Previous years have seen surges of the virus peak around August.Data from CDC's wastewater surveillance has tracked levels of the virus starting to accelerate in the West.
have inched up in recent weeks for all ages. infections are likely growing in 30 states and territories, the CDC now estimates.'Very, very similar' to JN.1KP.3 is now estimated to be outpacing the KP.2 variant, a so-called 'FLiRT' strain that this week inched up to 22.5% of cases. KP.2 had risen to dominance in previous weeks, but its growth has now slowed.Both KP.3 and KP.2 are 'very, very similar' to the JN.1 variant that had dominated this past winter's wave of infections.'When you look at KP.2 and KP.
vaccinesKP.3's rise comes as the FDA said Friday it had decided to call for shots this fall to be updated for the JN.1 variant which was dominant earlier this year, effectively turning down a newer formula aimed at the KP.2 variant.'Yes, we always say we shouldn't be chasing strains, but we're paying an incredibly high premium for mRNA vaccines to be able to have the freshest vaccines,' the FDA's Peter Marks had told the meeting.
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