ArticleBiomedicines2023
Comparative Analysis of Clinical and CT Findings in Patients with SARS-CoV-2 Original Strain, Delta and Omicron Variants.
Article in Biomedicines, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Differences in chest imaging between Omicron and non-Omicron coronavirus disease 2019 (COVID-19) patients: a systematic review and meta-analysis.BMC infectious diseases · 2025Pooled it
- Cycle Threshold (Ct) Value Trends in COVID-19: Analyzing Gender, Age, and Severity Factors Across Major Waves in India.Immunity, inflammation and disease · 2026Article
- Unraveling the cardiovascular burden of long COVID: symptom profiles, underlying mechanisms, and clinical management insights.Frontiers in cardiovascular medicine · 2026Review
- Review
- Lung involvement percentage in patients with COVID-19 during the Omicron wave in China: a SHAP-explained machine learning study from a single center.Frontiers in public health · 2025Article
- Comparison of Computed Tomography and Clinical Features Between Patients Infected with the SARS-CoV-2 Omicron Variant and the Original Strain.Infection and drug resistance · 2024Article
- Review
Corrections and comments
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Authors and funding
13 authors.
Funding
Abstract
objectivesTo compare the clinical characteristics and chest CT findings of patients infected with Omicron and Delta variants and the original strain of COVID-19.
methodsA total of 503 patients infected with the original strain (245 cases), Delta variant (90 cases), and Omicron variant (168 cases) were retrospectively analyzed. The differences in clinical severity and chest CT findings were analyzed. We also compared the infection severity of patients with different vaccination statuses and quantified pneumonia by a deep-learning approach.
resultsThe rate of severe disease decreased significantly from the original strain to the Delta variant and Omicron variant (27% vs. 10% vs. 4.8%,
conclusionsCompared with the original strain and Delta variant, the Omicron variant had less clinical severity and less lung injury on CT scans.
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Registered trials
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