# Tobacco Use and the Risk of COVID-19 and Adverse Outcomes

> **NCT05321433** · — · COMPLETED · sponsor: **Karolinska Institutet** · enrollment: 757585 (actual)

## Conditions studied

- COVID-19
- Respiratory Tract Infections
- Infections
- Pneumonia, Viral
- Pneumonia
- Virus Diseases
- SARS-CoV-2 Infection

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT05321433
- **Lead sponsor:** Karolinska Institutet
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2022-04-01
- **Primary completion:** 2023-12-31
- **Final completion:** 2023-12-31
- **Target enrollment:** 757585 (ACTUAL)
- **Last updated:** 2024-03-06

## Collaborators

- [object Object]
- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05321433

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05321433, "Tobacco Use and the Risk of COVID-19 and Adverse Outcomes". Retrieved via AI Analytics 2026-06-24 from https://api.ai-analytics.org/clinical/NCT05321433. Licensed CC0.

---

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