Dengue Vaccine Qdenga: Antibody Response Study

We are examining how the Qdenga vaccine affects antibody levels for other flavivirus infections in Swedish travelers. This study aims to see if vaccination leads to higher antibody levels that could interfere with diagnostic tests.

3-6 months6-10 visitsMonitoring phase (IV)No PlaceboStandard MedicinesInjectionAllergologyHematologyInfectious Diseases

What diseases are being studied?

Health conditions and diseases that the clinical trial is designed to study and treat.

Who can participate in the clinical trial?

These questions help us understand your situation so we can let the trial team know whether you might be a potential match. This is not a medical evaluation and is not part of the official screening, the study doctor will make the final decision..

What medicines are being studied?

Medicines that are officially approved for use in the European Union and considered safe by EMA. These medicines are already on the market and may be tested for new conditions or populations.

Dengue Tetravalent Vaccine (Live, Attenuated) Takeda
Dengue Tetravalent Vaccine (Live, Attenuated) Takeda is a vaccine that helps prevent dengue fever caused by all four types of dengue virus.
Liv.52
Liv.52 is an herbal medicine used to support liver health and improve digestion and appetite.
Serotyp

What active substances are being studied?

Active substances that are officially approved for use in the European Union and considered safe by EMA. These substances are already on the market and may be tested for new conditions or populations.

Achillea Millefolium Seed
Achillea millefolium seed is a plant-derived substance traditionally used to help soothe minor skin irritation and support wound healing.
Attenuated
Capparis Spinosa Cortex
Capparis spinosa cortex is a plant-derived substance traditionally used to support liver function and ease digestive complaints.

What similar medicines might you know?

Don't worry if you don't know the medicines tested in the trial. There is a chance you have heard about the similar medicines. Check the list below to see if you are familiar with any of them.

Adjuvin
Aflizan
Ainim

Where is the clinical trial being conducted?

Locations and medical facilities where this clinical trial is currently recruiting or conducting research. Select the locations where you would like to participate.

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Region Vaesterbotten
Department of infectious diseases
Umeå, Sweden
Sponsor: Region Vaesterbotten
Last updated: Nov 27, 2025

Disclaimer: Parts of this content have been automatically extracted from the EU Clinical Trials registry. While we strive for accuracy, please always contact the trial site or sponsor directly for correct and official information before making any decisions about participation. View on EU Clinical Trials.