Effectiveness of monovalent and bivalent mRNA vaccines in preventing COVID-19-associated emergency department and urgent care encounters among children aged 6 months-5 years - VISION Network, United States, July 2022-June 2023 Link-Gelles R , Ciesla AA , Rowley EAK , Klein NP , Naleway AL , Payne AB , Kharbanda A , Natarajan K , DeSilva MB , Dascomb K , Irving SA , Zerbo O , Reese SE , Wiegand RE , Najdowski M , Ong TC , Rao S , Stockwell MS , Stephens A , Goddard K , Martinez YC , Weber ZA , Fireman B , Hansen J , Timbol J , Grannis SJ , Barron MA , Embi PJ , Ball SW , Gaglani M , Grisel N , Arndorfer J , Tenforde MW , Fleming-Dutra KE . MMWR Morb Mortal Wkly Rep 2023 72 (33) 886-892

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