A second version of omicron is spreading. Here’s why scientists are on alert

(By Michaeleen Doucleff for NPR)

Just as the omicron surge starts to recede in parts of the U.S., scientists have their eye on another coronavirus variant spreading rapidly in parts of Asia and Europe. It’s officially called “omicron BA.2,” and this week scientists detected cases of it in several U.S. states, including California, Texas and Washington. Continue reading here…

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