# Special Investigation of COMIRNATY in the Population With Underlying Diseases

> **NCT04880447** · — · COMPLETED · sponsor: **Pfizer** · enrollment: 1075 (actual)

## Conditions studied

- COVID-19

## Interventions

- **BIOLOGICAL:** BNT162b2

## Key facts

- **NCT ID:** NCT04880447
- **Lead sponsor:** Pfizer
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2021-05-26
- **Primary completion:** 2022-04-14
- **Final completion:** 2022-04-14
- **Target enrollment:** 1075 (ACTUAL)
- **Last updated:** 2024-06-21


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04880447

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04880447, "Special Investigation of COMIRNATY in the Population With Underlying Diseases". Retrieved via AI Analytics 2026-06-07 from https://api.ai-analytics.org/clinical/NCT04880447. Licensed CC0.

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