# Efficacy of Pragmatic Same-day COVID-19 Ring Prophylaxis for Adult Individuals Exposed to SARS-CoV-2 in Switzerland

> **NCT04364022** · PHASE3 · COMPLETED · sponsor: **Calmy Alexandra** · enrollment: 326 (actual)

## Conditions studied

- Prevention of COVID-19

## Interventions

- **DRUG:** Lopinavir/ritonavir

## Key facts

- **NCT ID:** NCT04364022
- **Lead sponsor:** Calmy Alexandra
- **Sponsor class:** OTHER
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2020-04-23
- **Primary completion:** 2021-03-24
- **Final completion:** 2021-03-24
- **Target enrollment:** 326 (ACTUAL)
- **Last updated:** 2021-04-12


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04364022

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04364022, "Efficacy of Pragmatic Same-day COVID-19 Ring Prophylaxis for Adult Individuals Exposed to SARS-CoV-2 in Switzerland". Retrieved via AI Analytics 2026-06-05 from https://api.ai-analytics.org/clinical/NCT04364022. Licensed CC0.

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