# Assessment of the Immunization Levels Against Sars-Cov2 Virus in Subjects Who Have Received EU-approved COVID-19 Vaccines

> **NCT04954651** · — · COMPLETED · sponsor: **University of Patras** · enrollment: 1000 (actual)

## Conditions studied

- SARS-CoV2 Infection
- Vaccine Reaction

## Interventions

- **BIOLOGICAL:** Approved vaccines against Sars-Cov2

## Key facts

- **NCT ID:** NCT04954651
- **Lead sponsor:** University of Patras
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2021-07-07
- **Primary completion:** 2022-03-28
- **Final completion:** 2022-03-28
- **Target enrollment:** 1000 (ACTUAL)
- **Last updated:** 2022-06-06


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04954651

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04954651, "Assessment of the Immunization Levels Against Sars-Cov2 Virus in Subjects Who Have Received EU-approved COVID-19 Vaccines". Retrieved via AI Analytics 2026-07-26 from https://api.ai-analytics.org/clinical/NCT04954651. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*