COVID-19 Reinfections in the City of Sao Paulo, Brazil: Prevalence and Socioeconomic Factors.

ABSTRACT:

Background

Identifying those most susceptible to COVID-19 reinfection and understanding the associated characteristics is essential for developing effective prevention and control strategies. We aimed to evaluate the influence of social determinants, regional disparities, and variant evolution on COVID-19 reinfection rates.

Methods

We conducted a retrospective cohort study in São Paulo, Brazil, involving laboratory-confirmed COVID-19 patients. Reinfection was defined as a subsequent positive COVID-19 test at least 90 days after the previous confirmed infection. We assessed socioeconomic indicators, demographic factors, and spatial correlations. Reinfection rates were analyzed across different variants and subvariants.

Results

Among 73 741 patients, 5626 (7.6%) experie

SUBMITTER: Malheiro DT 

PROVIDER: S-EPMC12000647 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature