Interim Effectiveness of Updated 2023–2024 (Monovalent XBB.1.5) COVID-19 Vaccines Against COVID-19–Associated Emergency Department and Urgent Care Encounters and Hospitalization Among Immunocompetent Adults Aged ≥18 Years — VISION an – CDC February 29, 2024
Updated Covid-19 boosters continue to offer substantial protection even against the rapidly spreading XBB.1.5 subvariant January 25, 2023January 25, 2023
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