Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Name | Class |
|---|---|
| University of Oslo | OTHER |
| University of Oxford | OTHER |
| Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) | OTHER |
Not provided
Not provided
Not provided
Not provided
Viruses with high mutation rates, such influenza or HIV, pose a major challenge for vaccine design. The current influenza vaccination strategy of yearly vaccination with adapted strains aims to maximally diversify the antibody immune response to prevent viral escape. There is, however, growing evidence, that repeated vaccination with very similar viral proteins might limit, instead of broaden, diversification and thereby reduce vaccine efficacy.
The ARIVA Study prospectively studies the immunological impact of repeated influenza vaccination on viral variant recognition and antibody responses in healthy subjects cross-sectionally and over three consecutive vaccination seasons.
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Influenza Vaccination | Biological | Only subjects vaccinated against influenza will be enrolled. The study itself is observational |
| Measure | Description | Time Frame |
|---|---|---|
| Influenza specific Antibody Responses | Hemagglutination titers against different H3N2 Influenza strains will be measured and compared between study subjects stratified by number of previous vaccinations | Change between baseline and 28 days post-vaccination will be compared |
| Measure | Description | Time Frame |
|---|---|---|
| Plasmablast generation | Frequency of plasmablasts in the peripheral blood will be assessed and compared between study subjects stratified by number of previous vaccinations | Day 7 post-vaccination |
| BCR Repertoire composition |
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Not provided
Healthy volunteers
Not provided
| Name | Affiliation | Role |
|---|---|---|
| Christoph T Berger, MD | University Hospital Basel, Medical Outpatient Clinic | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University Hospital Basel | Basel | Switzerland |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| ID | Term |
|---|---|
| D007252 | Influenza Vaccines |
| ID | Term |
|---|---|
| D014765 | Viral Vaccines |
| D014612 | Vaccines |
| D001688 | Biological Products |
| D045424 | Complex Mixtures |
Not provided
Not provided
Not provided
Not provided
Not provided
Peripheral blood mononuclear cells, serum and RNA is collected
Sorted B cell subsets will be sequenced to define the BCR repertoire. Subjects will be compared stratified by vaccination status
| Cross sectional comparison of the BCR repertoire characteristics day 0 and day 28 |