The vaccination status of COVID-19 hospitalized patients during the Omicron BQ.1.1 wave in Northeast Brazil suggests the need for a fifth booster dose in the elderly, with a time since the last dose of more than 6 months
Keywords:COVID-19, SARS-CoV-2, COVID-19 vaccines
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Copyright (c) 2023 Taise Cavalcante, Waneska Barboza, Paulo Ricardo Martins-Filho
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