Comparison of the Immune Response to Natural COVID-19 Infection and Vaccination (COVID19vac-1)
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ClinicalTrials.gov Identifier: NCT04706390 |
Recruitment Status :
Recruiting
First Posted : January 12, 2021
Last Update Posted : January 12, 2021
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Condition or disease | Intervention/treatment |
---|---|
Covid19 | Biological: covid-19 vaccine |
The primary aim of this study is
- To compare immune responses after natural SARS-CoV-2 infection and COVID-19 vaccination The secondary aims are
- To compare the duration and breadth of antibody responses between natural infection and vaccination.
- To investigate the duration and breadth of B and T cellular responses between natural infection and vaccination.
- To evaluate the short and long term complications after natural infection and vaccination.
- To find out if previous infection skews the immune response after vaccination.
- To study reinfection after natural infection and vaccination.
Study Type : | Observational |
Estimated Enrollment : | 2500 participants |
Observational Model: | Cohort |
Time Perspective: | Prospective |
Official Title: | Comparison of the Immune Response to Natural COVID-19 Infection and Vaccination |
Actual Study Start Date : | January 12, 2021 |
Estimated Primary Completion Date : | January 12, 2022 |
Estimated Study Completion Date : | January 12, 2024 |
Group/Cohort | Intervention/treatment |
---|---|
Health care workers
500-1000 health care workers prioritized for early vaccination
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Biological: covid-19 vaccine
vaccination |
prioritized patient populations
2000 individuals in patient populations prioritized for vaccinations
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Biological: covid-19 vaccine
vaccination |
- immune responses [ Time Frame: 2 months to 3 years ]spike antibody response to SARS-CoV-2
- Duration and breadth of B- and T cell responses [ Time Frame: 2 months to 3 years ]compare vaccination to natural infection
- Immune responses in healthy people and patient groups at risk [ Time Frame: 2 months to 3 years ]compare between vaccination groups
Biospecimen Retention: Samples With DNA

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Ages Eligible for Study: | 20 Years to 100 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Sampling Method: | Non-Probability Sample |
Inclusion Criteria:
- subjects prioritized by national vaccination program
Exclusion Criteria:
- Children
- unable or unwilling to provide informed consent

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04706390
Contact: Rebecca J Cox, PhD | +4745242974 | rebecca.cox@uib.no | |
Contact: Nina Langeland, MD | +4741616450 | nina.langeland@uib.no |
Norway | |
University of Bergen | Recruiting |
Bergen, Norway, 5020 | |
Contact: Rebecca J Cox, PhD 45242974 rebecca.cox@uib.no | |
Contact: Nina Langeland, MD 41616450 nina.langeland@uib.no |
Principal Investigator: | Rebecca J Cox, PhD | University of Bergen |
Responsible Party: | Rebecca Cox, Professor, University of Bergen |
ClinicalTrials.gov Identifier: | NCT04706390 |
Other Study ID Numbers: |
COVID-19vacc-1 |
First Posted: | January 12, 2021 Key Record Dates |
Last Update Posted: | January 12, 2021 |
Last Verified: | January 2021 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Undecided |
Plan Description: | To be developed |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Covid19 Vaccine SARS-CoV-2 antibody |
Infection |