# COVID-19 Omicron BA.5 Subvariant Dose Finding Infection Study

> **NCT06478420** · PHASE1 · ACTIVE_NOT_RECRUITING · sponsor: **University of Oxford** · enrollment: 45 (estimated)

## Conditions studied

- SARS-CoV-2 Infection

## Interventions

- **BIOLOGICAL:** Omicron BA.5 SARS-CoV-2 challenge virus

## Key facts

- **NCT ID:** NCT06478420
- **Lead sponsor:** University of Oxford
- **Sponsor class:** OTHER
- **Phase:** PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2024-08-08
- **Primary completion:** 2028-10-31
- **Final completion:** 2028-10-31
- **Target enrollment:** 45 (ESTIMATED)
- **Last updated:** 2026-04-24

## Collaborators

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## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT06478420

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT06478420, "COVID-19 Omicron BA.5 Subvariant Dose Finding Infection Study". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT06478420. Licensed CC0.

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