ArticleBMC infectious diseases2025
Determination and comparison of serum C-reactive protein levels in patients with Omicron and Delta strains of COVID-19 hospitalized in Imam Khomeini Hospital, Urmia, 2021.
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 2 papers.
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Who cites it
2 citing papers in PubMed.
- C-Reactive Protein Trajectories by Summary Metric Across the Coronavirus-2019 Period: A 16-Year Interrupted Time-Series Analysis (2008-2023).Diagnostics (Basel, Switzerland) · 2026Article
- Development and validation of a model for early prediction of severe/critical COVID-19 in elderly patients.PeerJ · 2026Article
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Abstract
backgroundCOVID-19, caused by SARS-CoV-2, has led to a global pandemic with varying clinical outcomes across different variants. C-reactive protein (CRP), an inflammatory marker, is commonly used to assess disease severity. This study aimed to compare serum CRP levels in hospitalized patients infected with the Omicron and Delta variants at Imam Khomeini Hospital, Urmia, in 2021.
methodsA retrospective study was conducted on 673 hospitalized COVID-19 patients, aged 17 to 91 years. After applying the exclusion criteria, 64 patients were removed, and 609 patients remained for the final analysis. Data collected included demographic information, vaccination status, length of hospital stay, CRP levels, and disease outcomes. Serum CRP levels were measured, and statistical analyses were performed using SPSS version 27, including independent t-tests for group comparisons.
resultsThe mean age of the patients was 54.34 ± 15.88 years, with 56.3% of participants being female. Among the patients, 65.5% had received the COVID-19 vaccine. The mean serum CRP level was 48.54 ± 32.37 mg/L. A statistically significant difference in CRP levels was observed between vaccinated and unvaccinated patients, with unvaccinated patients having higher CRP levels. However, no significant difference in CRP levels was found between patients infected with the Omicron and Delta variants. CRP levels were significantly higher in patients who died compared to those who recovered. Additionally, female patients exhibited significantly higher CRP levels than male patients.
conclusionsThis study highlights the potential role of CRP as a marker for disease severity and prognosis in COVID-19 patients. While no significant difference was found between the Omicron and Delta variants in terms of CRP levels, vaccination status and patient outcomes were strongly associated with CRP levels. Further studies are needed to explore the role of CRP in predicting clinical outcomes and to investigate the mechanisms underlying gender differences in inflammatory responses to COVID-19. CLINICAL TRIAL NUMBER: Not applicable.
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