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CoVacc - Immune response to vaccination against Covid-19

CoVacc - Immune response to vaccination against Covid-19, an open multicenter phase IV study

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2021-000683-30-SE
Enrollment
3000
Registered
2021-02-23
Start date
2021-03-03
Completion date
Unknown
Last updated
2025-01-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Individuals with and without pre-existing immunity to Covid-19.

Interventions

Trade Name: Covid-19 vaccine, all vaccines with marketing authorisation in Sweden are allowed. Product Name: Covid-19 vaccine Product Code: NA Pharmaceutical Form: Concentrate and solvent for solution

Sponsors

Umeå university
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: • Consents to participate in the study • Age = 18 years Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 2250 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 750

Exclusion criteria

Exclusion criteria: • Age <18 years • Incapable of giving informed consent (does not apply to participants in the elderly study) • Contraindication to vaccination • Severe disease (assessed to affect the subjects ability to complete the study) • Ongoing treatment that is judged to affect the vaccine response (Does not include inhaled steroids and nasal sprays, as well as tablet cortisone =15mg / day. Rituximab treatment is not an exclusion criterion.) Participants in the elderly study: The exclusion criteria described in the protocol above for CoVacc will not apply to the sub-study called The Elderly Study, this clinical research study in which people with severe illness and people who lack their own decision-making ability can be included. Data on chronic diseases or drugs will not be collected

Design outcomes

Primary

MeasureTime frame
Main Objective: Does antibody development to SARS-CoV-2 S protein differ after vaccination between those who have had a previous SARS-CoV-2 infection compared to Covid-19 naive individuals?;Secondary Objective: Better understanding of how the human immune system reacts when exposed to foreign protein antigen measured as antibody level in serum, plasma and mucosa as well as at the cellular and genetic level. The secondary issues are those that are general to understanding how the human immune system works in both infection and vaccination.;Primary end point(s): Investigate the level of specific antibodies to SARS-CoV-2 yearly, up to four years after vaccination.;Timepoint(s) of evaluation of this end point: 1, 2, 3, 4 year after vaccination

Secondary

MeasureTime frame
Secondary end point(s): Analyzes to investigate how the human immune system reacts to Covid 19 vaccine.;Timepoint(s) of evaluation of this end point: Before and after each dose of vaccine. Thereafter the following times after vaccination: 1 month, 3 months, 6 months, 1 year, 2 years, 3 years and 4 years.

Countries

Sweden

Contacts

Public ContactClas Ahlm

Umeå university

clas.ahlm@umu.se

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026