# What is the Anti-HAV Seroprevalence of Travelers >60 Years or Having Lived in a Tropical Country for >5 Years

> **NCT04638335** · — · COMPLETED · sponsor: **University of Lausanne Hospitals** · enrollment: 50 (actual)

## Conditions studied

- Hepatitis A

## Interventions

- **BIOLOGICAL:** Blood test

## Key facts

- **NCT ID:** NCT04638335
- **Lead sponsor:** University of Lausanne Hospitals
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2019-10-06
- **Primary completion:** 2021-12-31
- **Final completion:** 2022-03-31
- **Target enrollment:** 50 (ACTUAL)
- **Last updated:** 2022-08-23


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04638335

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04638335, "What is the Anti-HAV Seroprevalence of Travelers >60 Years or Having Lived in a Tropical Country for >5 Years". Retrieved via AI Analytics 2026-06-23 from https://api.ai-analytics.org/clinical/NCT04638335. Licensed CC0.

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