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![Travelers pass a sign for COVID-19 testing at Logan Airport in Boston.](https://woub.org/wp-content/uploads/2022/06/ap22161507999061-b0ef7440b5e4044389dcd97be009384888850499-scaled-e1654888970938-900x422.jpg)
New omicron subvariants now dominant in the U.S., raising fears of a winter surge
By: Rob Stein | NPR
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WASHINGTON, D.C. (NPR) — Two new omicron subvariants have become dominant in the United States, raising fears they could fuel yet another surge of COVID-19 infections, according to estimates released… Read More
![A syringe is prepared with the Pfizer COVID-19 vaccine at a vaccination clinic at the Keystone First Wellness Center in Chester, Pa.](https://woub.org/wp-content/uploads/2022/07/ap22175701180010_custom-02fbc59ed7947212df826cd5af0080b578bfffe5-scaled-e1657903109176-900x422.jpg)
The omicron subvariant dominating U.S. COVID-19 cases is more vaccine-resistant
By: Ayana Archie | NPR
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WASHINGTON, D.C. (NPR) — The BA.5 omicron subvariant, which is now the most prevalent coronavirus strain in the United States, is four times more resistant to COVID-19 vaccines, according to… Read More
![Vials of testing fluid and packages of nose swabs are seen at a drive through COVID-19 testing site at Churchill Downs on January 10, 2022 in Louisville, Kentucky.](https://woub.org/wp-content/uploads/2022/02/omicron-ba2-getty-1237645273-493161e72067f9a57cf7ae7b0c0f838564551ece-e1645458053728-900x422.jpg)
A more contagious version of omicron spreads in the U.S., fueling worries
By: Rob Stein | NPR
Posted on:
WASHINGTON, D.C. (NPR) — As the omicron surge continues to decline in the U.S., infectious disease experts are keeping a close eye on an even more contagious version of the… Read More