# CoVid-19 - Infection and Antibody Formation in the Viennese Population

> **NCT04346264** · — · COMPLETED · sponsor: **Ludwig Boltzmann Institute for Lung Health** · enrollment: 12419 (actual)

## Conditions studied

- Virus Diseases
- COVID-19

## Interventions

- **DIAGNOSTIC_TEST:** NO intervention planned due to the observational study design only a diagnostic testing

## Key facts

- **NCT ID:** NCT04346264
- **Lead sponsor:** Ludwig Boltzmann Institute for Lung Health
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2020-04-27
- **Primary completion:** 2020-05-27
- **Final completion:** 2020-05-27
- **Target enrollment:** 12419 (ACTUAL)
- **Last updated:** 2022-05-04


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04346264

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04346264, "CoVid-19 - Infection and Antibody Formation in the Viennese Population". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT04346264. Licensed CC0.

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