# Retrospective Study on Severe Respiratory Illness to Access the Presence of COVID-19

> **NCT04346056** · — · UNKNOWN · sponsor: **Ain Shams University** · enrollment: 500 (estimated)

## Conditions studied

- Coronavirus Disease (COVID-19)
- COVID-19

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT04346056
- **Lead sponsor:** Ain Shams University
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** UNKNOWN
- **Start date:** 2020-04-14
- **Primary completion:** 2020-10-01
- **Final completion:** 2020-12-01
- **Target enrollment:** 500 (ESTIMATED)
- **Last updated:** 2020-04-20


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04346056

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04346056, "Retrospective Study on Severe Respiratory Illness to Access the Presence of COVID-19". Retrieved via AI Analytics 2026-06-26 from https://api.ai-analytics.org/clinical/NCT04346056. Licensed CC0.

---

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