Related Experiment Video
Updated: Jun 30, 2026
Dynamic Monitoring of Seroconversion using a Multianalyte Immunobead Assay for Covid-19
Published on: February 16, 2022
Impact of COVID-19 Vaccination on Post-COVID Syndrome Across Clinical Definitions and Phenotypes: A Prospective
Tanja Kraus1, Hendrik Napierala2, Anne Schrimpf3
1Institute of General Practice and Interprofessional Care, University Hospital Tübingen, Tübingen, Germany.
Objective:
To assess the impact of COVID-19 vaccination on distinct clinical definitions and phenotypes of post-COVID syndrome (PCS) and to identify risk factors for PCS despite vaccination.
Methods:
Data were drawn from the German National Pandemic Cohort Network (NAPKON), including adult COVID-19 patients with known vaccination status recruited between December 2, 2020, and February 13, 2023. The prevalence of PCS was assessed by 3 clinical definitions: the broad World Health Organization definition (any sequelae at 3 months), symptom clusters (fatigue, respiratory, cognitive), and a symptom-based PCS score reflecting clinical severity. Multivariable logistic regression was employed to estimate the protective effect of vaccination.
Results:
Of 756 patients, 26% were fully vaccinated (≥2 doses) before infection. Vaccination was associated with a significantly reduced risk of PCS according to the World Health Organization definition (odds ratio [OR], 0.555; 95% CI, 0.339 to 0.906), the PCS score (OR, 0.536; 95% CI, 0.335 to 0.856), the respiratory cluster (OR, 0.508; 95% CI, 0.295 to 0.875), and the cognitive cluster (OR, 0.443; 95% CI, 0.213 to 0.923). In contrast, no protective association was observed for the fatigue cluster (OR, 0.917; 95% CI, 0.554 to 1.519). The favorable association with vaccination was particularly observed in patients with mild acute symptoms, regardless of hospitalization. The protective effect of vaccination persisted at 12-month follow-up, although fatigue remained unaffected.
Conclusion:
Findings indicate that broader PCS definitions may mask clinically relevant heterogeneity and support the need for differentiated, phenotype-oriented definitions that reflect clinical presentations of PCS, including differential responses to vaccination. Such refined clinical definitions may facilitate exploration of whether these phenotypes reflect distinct underlying pathophysiologic mechanisms.
Trial Registration:
ClinicalTrials.gov identifier: NCT04768998.
Related Concept Videos
01:51Vaccinations
01:05Single Nucleotide Polymorphisms-SNPs
01:19Pharmacovigilance
This process, termed pharmacovigilance, aims to detect, evaluate, and minimize harmful effects related to medication use. The data collection for pharmacovigilance depends on spontaneous reporting systems, where healthcare professionals or patients voluntarily report suspected ADRs.
In some cases, there...
01:20COPD: Pathogenesis and Clinical Features
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...
01:23Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast, controlled...
01:29Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu