# SWITCH ON: Analysing the Immunogenicity of Additional Booster Vaccinations in HCW

> **NCT05471440** · NA · UNKNOWN · sponsor: **Erasmus Medical Center** · enrollment: 431 (actual)

## Conditions studied

- Covid-19 Vaccination

## Interventions

- **DRUG:** Direct boost mRNA
- **DRUG:** Direct boost adeno
- **DRUG:** Post-poned boost mRNA
- **DRUG:** Post-poned boost adeno

## Key facts

- **NCT ID:** NCT05471440
- **Lead sponsor:** Erasmus Medical Center
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2022-08-20
- **Primary completion:** 2022-09-15
- **Final completion:** 2023-08-30
- **Target enrollment:** 431 (ACTUAL)
- **Last updated:** 2023-02-15

## Collaborators

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## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05471440

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05471440, "SWITCH ON: Analysing the Immunogenicity of Additional Booster Vaccinations in HCW". Retrieved via AI Analytics 2026-06-09 from https://api.ai-analytics.org/clinical/NCT05471440. Licensed CC0.

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