COVID-19 vaccine booster doses provide increased protection against COVID-19 hospitalization compared with previously vaccinated individuals: Interim findings from the REFORCO-Brazil real-world effectiveness study during Delta and Omicron

CONCLUSIONS: Our results support the use of AZD1222 and other adenoviral/mRNA vaccine boosters to maintain protection against COVID-19 hospitalization from Omicron subvariants, including in elderly and immunocompromised individuals at increased risk of accelerated waning or severe outcomes.PMID:37704499 | DOI:10.1016/j.vaccine.2023.08.085

Source: Vaccine - September 13, 2023 Category: Allergy & Immunology Authors: Wilhelmine Meeraus Anke L Stuurman Ilgaz Durukal Eduardo Conde-Sousa Andrew Lee Andr é Santa Maria B árbara Emoingt Furtado Mario Ouwens Christen M Gray Douglas Andreas Valverde Hugo Gomes da Silva Sylvia Taylor Source Type: research