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Coronavirus vaccines; effectiveness (old vaccines don’t help, updated boosters do); BNT162b2 XBB1.5-adapted Vaccine and COVID-19 Hospital Admissions and Ambulatory Visits in US Adults | medRxiv

BNT162b2 XBB1.5-adapted Vaccine and COVID-19 Hospital Admissions and Ambulatory Visits in US Adults
— Read on www.medrxiv.org/content/10.1101/2023.12.24.23300512v1

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