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Follow-up: Immunogenicity according to reactogenicity of Covid-19 vaccines

Follow-up: Immunogenicity according to reactogenicity of Covid-19 vaccines - immunoreakt-II

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
DRKS
Registry ID
DRKS00026982
Enrollment
76
Registered
2021-10-21
Start date
2021-10-21
Completion date
Unknown
Last updated
2025-04-07

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

Conditions

Reactogenicity and immunogenicity of Comirnaty

Interventions

Group 1: timepoint 1 (6 months +- 4 weeks after second vaccination with Comirnaty): enrolment and blood sampling
anti-SARS-CoV-2 antibodies and neutralization activity. timepoint 2 (not obligatory
4-8 weeks after a third vaccination with an mRNA vaccine): blood sampling
anti-SARS-CoV-2 antibodies and neutralization activity
survey on adverse reactions after third vaccination.

Sponsors

University Medical Center Regensburg
Lead Sponsor

Eligibility

Sex/Gender
All
Age
21 Years to 66 Years

Inclusion criteria

Inclusion criteria: immunoreakt study participants who were included in the final analysis of the immunoreakt study

Exclusion criteria

Exclusion criteria: 1) new history of SARS-CoV-2 infection 2) new immunosuppression (disease or medication-induced)

Design outcomes

Primary

MeasureTime frame
1) anti SARS-CoV-2 antibody course and neutralization activity 6 months (+- 4 weeks) after second vaccination with Comirnaty. 2) reactogenicity and immunogenicity of a third COVID-19 vaccination with an mRNA vaccine.

Secondary

MeasureTime frame
Persistence of an immunological benefit of men with severe adverse reactions after first and/or second vaccination with Comirnaty compared to men without adverse reactions after first and second vaccination.

Countries

Germany

Contacts

Public ContactStilla Bauernfeind

University Medical Center Regensburg

stilla.bauernfeind@ukr.de0049-941-944-4250

Outcome results

None listed

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