Influenza Vaccine Study: Seqirus H5N8

We are investigating how well the Seqirus H5N8 influenza vaccine works in adults who have been previously vaccinated and those who have never received an H5 vaccine. The study aims to assess immune responses and safety in both groups.

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 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.

Influenza A/Astrakhan/3212/2020 (H5n8)-Like Strain (Cber-Rg8a) (Clade 2.3.4.4b)
An influenza A (H5N8-like) viral strain used as a vaccine ingredient to help the immune system protect against H5 avian flu.

What experimental substances are being tested?

Experimental substances that are being investigated in this clinical trial. These are not yet approved for general use.

Zoonotic Influenza Vaccine

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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Helse Bergen HF
Influenza centre
Bergen, Norway
Sponsor: Helse Bergen HF
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.