# A Study to Understand How the Use of Paxlovid Affected the Healthcare Use in People With Pre-existing Conditions.

> **NCT04550936** · — · COMPLETED · sponsor: **Pfizer** · enrollment: 307 (actual)

## Conditions studied

- Invasive Aspergillosis
- Mucormycosis

## Interventions

- **DRUG:** Isavuconazole

## Key facts

- **NCT ID:** NCT04550936
- **Lead sponsor:** Pfizer
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2021-03-10
- **Primary completion:** 2023-12-23
- **Final completion:** 2023-12-23
- **Target enrollment:** 307 (ACTUAL)
- **Last updated:** 2025-12-09


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04550936

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04550936, "A Study to Understand How the Use of Paxlovid Affected the Healthcare Use in People With Pre-existing Conditions.". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT04550936. Licensed CC0.

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