Vaccine X
December 2024
Background: While COVID-19 vaccination has been shown to reduce the risk of severe illness, its impact on the occurrence of persistent symptoms in patients with mild Omicron infection remains uncertain. Our objective was to investigate whether COVID-19 vaccination reduces the occurrence of persistent COVID-19-related symptoms 3 months after mild Omicron infection.
Methods: Multicenter prospective cohort study was conducted in Brazil between January 2022 and June 2023 when Omicron was predominant.