The Highly Infectious FLiRT Variants Behind the Summer Covid Wave
Briefly

The US CDC has recorded an uptick in positive Covid tests, hospitalizations, and deaths, while the UK and Japan are experiencing rising cases, with Japan's surge notably visible due to new variants like KP.3.
The FLiRT variants-KP.3, LB.1, and KP.2.3- descendants of Omicron sublineage JN.1, have become drivers of new infections globally, with KP.3 emerging as dominant. KP.3 accounted for 37% of new Covid cases in the US, indicating significant transmission rates and mutations in the spike protein.
Read at WIRED
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