ArticleBMC infectious diseases2026
Prevalence and predictive factors of long COVID in nurses in Brazil.
Article in BMC infectious diseases, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThe coronavirus disease 2019 (COVID-19) pandemic has posed significant challenges to global public health, particularly affecting nursing professionals, owing to their continuous exposure to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and intense working conditions. This study aims to analyze the frequency and predictors of symptoms persisting for 4 weeks or more after COVID-19 among Brazilian nurses, examining associations with situational and clinical variables.
methodsA cross-sectional study was conducted involving 3,155 nurses from all macroregions of Brazil who tested positive for COVID-19, of whom 1,921 reported persistent symptoms lasting four weeks or more due to COVID-19. Data collection included sociodemographic, situational, and clinical variables. The statistical tests chi-square was applied to assess differences between independent variables and symptom persistence. Additionally, in order to assess associations between the outcome variable and independent variables a logistic regression were applied. Finally co-occurrence analysis and the Jaccard index were used to identify patterns associated with persistency of COVID-19 symptoms.
resultsThe study consisted of 3,155 nurses, predominantly female (84.0%). The prevalence of symptoms persisting for four weeks or longer after COVID-19 through the sample was 60,9%. Chronic conditions were reported by 33.0% of the participants, the most common persistent symptoms included fatigue (70.0%), memory loss (68.8%). Statistically significant associations were observed between long COVID-19 duration and the presence of comorbidities, especially rhinitis and obesity (p < 0.01). Cooccurrence analysis revealed strong correlations between cough and memory loss (Jaccard = 0.980), insomnia and loss of taste (0.978).
conclusionsThe findings highlight the complexity of COVID-19 among Brazilian nurses and identify clinical and sociodemographic factors associated with persistent symptoms, informing strategies to support affected healthcare professionals. CLINICAL TRIAL NUMBER: Not applicable.
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