Observational studyInfection2024
Comparison of post-COVID-19 symptoms in patients infected with the SARS-CoV-2 variants delta and omicron-results of the Cross-Sectoral Platform of the German National Pandemic Cohort Network (NAPKON-SUEP).
Observational study in Infection, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04768998 (Intersectoral Platform), which is not on this map. Cited by 8 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.
Intersectoral Platform (SÜP) of the National Pandemic Cohort Network (NAPKON)
Who cites it
8 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Diagnosis and Treatment of Adult Patients with Cough.Respiration; international review of thoracic diseases · 2025Guideline
- Article
- An externally validated machine learning algorithm for predicting mental and physical health outcomes three months post-hospitalization for severe viral infection with SARS-CoV-2.Brain, behavior, & immunity - health · 2026Article
- Population-based comparison of post-acute sequelae of COVID-19 and health-related quality of life across pandemic periods: Omicron era versus early pandemic.Scientific reports · 2026Article
- A narrative review of SARS-CoV-2 variants and long COVID.Journal of thoracic disease · 2026Review
- Reinfection-Driven Accumulation of SARS-CoV-2 Antibodies: A 36-Month Longitudinal Study in Austrian Blood Donors.Diagnostics (Basel, Switzerland) · 2026Article
- Review
- [Immunological aspects and stress regulation in fatigue].Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz · 2024Review
Corrections and comments
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Authors and funding
39 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe influence of new SARS-CoV-2 variants on the post-COVID-19 condition (PCC) remains unanswered. Therefore, we examined the prevalence and predictors of PCC-related symptoms in patients infected with the SARS-CoV-2 variants delta or omicron.
methodsWe compared prevalences and risk factors of acute and PCC-related symptoms three months after primary infection (3MFU) between delta- and omicron-infected patients from the Cross-Sectoral Platform of the German National Pandemic Cohort Network. Health-related quality of life (HrQoL) was determined by the EQ-5D-5L index score and trend groups were calculated to describe changes of HrQoL between different time points.
resultsWe considered 758 patients for our analysis (delta: n = 341; omicron: n = 417). Compared with omicron patients, delta patients had a similar prevalence of PCC at the 3MFU (p = 0.354), whereby fatigue occurred most frequently (n = 256, 34%). HrQoL was comparable between the groups with the lowest EQ-5D-5L index score (0.75, 95% CI 0.73-0.78) at disease onset. While most patients (69%, n = 348) never showed a declined HrQoL, it deteriorated substantially in 37 patients (7%) from the acute phase to the 3MFU of which 27 were infected with omicron.
conclusionWith quality-controlled data from a multicenter cohort, we showed that PCC is an equally common challenge for patients infected with the SARS-CoV-2 variants delta and omicron at least for the German population. Developing the EQ-5D-5L index score trend groups showed that over two thirds of patients did not experience any restrictions in their HrQoL due to or after the SARS-CoV-2 infection at the 3MFU. CLINICAL TRAIL REGISTRATION: The cohort is registered at ClinicalTrials.gov since February 24, 2021 (Identifier: NCT04768998).
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