# COVID-19 Vaccination of Immunodeficient Persons (COVAXID)

> **NCT04780659** · PHASE4 · COMPLETED · sponsor: **Karolinska University Hospital** · enrollment: 539 (actual)

## Conditions studied

- Covid19

## Interventions

- **BIOLOGICAL:** Comirnaty (COVID-19, mRNA vaccine)

## Key facts

- **NCT ID:** NCT04780659
- **Lead sponsor:** Karolinska University Hospital
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2021-02-23
- **Primary completion:** 2021-10-15
- **Final completion:** 2024-05-08
- **Target enrollment:** 539 (ACTUAL)
- **Last updated:** 2025-12-04

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04780659

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04780659, "COVID-19 Vaccination of Immunodeficient Persons (COVAXID)". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT04780659. Licensed CC0.

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