# The BOOSTED (Booster Options Or Switching Tested for Effectiveness and Downsides Study) Trial (COVID-19)

> **NCT05268185** · NA · COMPLETED · sponsor: **University of California, San Francisco** · enrollment: 301 (actual)

## Conditions studied

- COVID-19
- Vaccine Reaction
- COVID-19 Pandemic

## Interventions

- **BEHAVIORAL:** Moderna Booster Vaccine
- **BEHAVIORAL:** Pfizer Booster Vaccine

## Key facts

- **NCT ID:** NCT05268185
- **Lead sponsor:** University of California, San Francisco
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2022-01-18
- **Primary completion:** 2022-03-31
- **Final completion:** 2023-01-18
- **Target enrollment:** 301 (ACTUAL)
- **Last updated:** 2023-02-03


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05268185

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05268185, "The BOOSTED (Booster Options Or Switching Tested for Effectiveness and Downsides Study) Trial (COVID-19)". Retrieved via AI Analytics 2026-06-09 from https://api.ai-analytics.org/clinical/NCT05268185. Licensed CC0.

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