In a study released today by the Centers for Disease Control and Prevention, a single bivalent COVID-19 vaccine booster provided additional protection against omicron XBB variants in adults who previously received two to four monovalent vaccine doses. XBB-related variants account for over half of currently circulating COVID-19 variants in the United States.
 
“All persons should stay up to date with recommended COVID-19 vaccines, including receiving a bivalent booster dose when eligible,” the authors conclude.

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