ArticleBMC infectious diseases2025
The evolving landscape of COVID-19: factors associated with in-hospital COVID-19 related mortality during the 2023-2024 phase of JN.1 subvariant dominance.
Article in BMC infectious diseases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
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Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundCOVID-19 remains a complex health challenge. We analysed the characteristics and outcomes of COVID-19-related hospitalisations during JN.1 variant dominance.
methodsConducted in a hospital serving a socioeconomically deprived population, this study included all adults hospitalised with COVID-19 from 1st November 2023 to 31st August 2024. The primary outcome was in-hospital mortality, analysed in relation to demographic, clinical, and laboratory parameters.
resultsAmong 122 individuals (median age 76 years, 58.2% males, median comorbidity index 5), 114/122 (93.4%) had received ≥ 1 SARS-CoV-2 vaccination, with a median of 23 months elapsed since the last dose. Fever (67/122, 54.9%) and dyspnoea (49/122, 40.2%) were common presenting symptoms, with 78/122 (64%) showing CT evidence of SARS-CoV-2 pneumonia; 25/122 (20%) had purely neurological presentations. Treatment included remdesivir (115/122, 94.3%) and/or nirmatrelvir/ritonavir (9/122, 7.4%), sotrovimab (15/122, 12.3%), corticosteroids (61/122, 50.0%), and oxygen supplementation (76/122, 62.3%). Whereas 107/122 (87.7%) were discharged after a median of seven days, in-hospital mortality was 15/122 (12.3%) after a median of 16 days. Baseline factors associated with mortality were neutrophil-lymphocyte ratio > 8, D-dimer ≥ 1800 ng/mL, procalcitonin ≥ 1.0 ng/mL, and albumin < 3.2 g/dL; during admission, nasopharyngeal SARS-CoV-2 antigen positivity persisting for > 12 days, hospitalisation for ≥ 10 days, higher oxygen requirements with the resulting corticosteroid use, and healthcare-associated bacteraemia were associated with increased odds of mortality.
conclusionsBaseline laboratory parameters and persistent SARS-CoV-2 antigen positivity despite antiviral therapy offer readily available prognostic insights for patients hospitalised with COVID-19. It is imperative to advocate for up-to-date COVID-19 vaccination among older people and other vulnerable groups.
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