Association between vaccination and persistent COVID-19-related symptoms among patients with mild Omicron infection: A prospective cohort study.

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.

Long-term Health-Related Quality of Life and Outcomes after Hospitalization for COVID-19 in Brazil: Post-COVID Brazil 1 Study Protocol.

Background: The long-term impact of hospitalization for COVID-19 on patients' physical, mental, and cognitive health still needs further assessment.

Objectives: This study aims to evaluate factors associated with quality of life and cardiovascular and non-cardiovascular outcomes 12 months after hospitalization for COVID-19.

Methods: This prospective multicenter study intends to enroll 611 patients hospitalized due to COVID-19 (NCT05165979).

Health-Related Quality of Life and Long-Term Outcomes after Mildly Symptomatic COVID-19: The Post-COVID Brazil Study 2 Protocol.

Background: The long-term effects of mild COVID-19 on physical, cognitive, and mental health are not yet well understood.

Objective: The purpose of this paper is to describe the protocol for the ongoing "Post-COVID Brazil" study 2, which aims to evaluate the factors associated with health-related quality of life and long-term cardiovascular and non-cardiovascular outcomes one year after a mild episode of symptomatic COVID-19.

Methods: The "Post-COVID Brazil" study 2 is a prospective multicenter study that plans to enroll 1047 patients (NCT05197647).

Coronary artery calcification and dietary intake in asymptomatic men.

Dietary factors may influence the process of atherosclerosis and coronary artery calcification (CAC). This study assessed CAC and its association with dietary intake in asymptomatic men. We evaluated 150 asymptomatic men with mean age of 58.