First U.S. omicron case

Photo credit: governortomwolf – Flickr, CC BY 2.0, link.

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First U.S. omicron case.

Coronavirus vaccine boosters open to American adults

Photo credit: Metropolitan Transportation Authority of the State of New York from United States of America – MTA Leadership Launches Agency’s Public Vaccination Program, CC BY 2.0, link.

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Coronavirus vaccine boosters open to American adults.