The BA.4.6 subvariant of COVID-19 is the newest “variant of concern.”

It is present in at least four states that the Centers for Disease Control (CDC) is tracking.

Here’s what you need to know.

What is BA.4.6?

BA.4.6. is a spinoff of the BA.4 subvariant of the coronavirus’ omicron variant. It had been “circulating for several weeks” in the U.S. before the CDC officially began tracking it, according to Dr. Cyrus Shahpar, White House COVID-19 data director.

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