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Immunantwort und Infektion nach Impfdurchbrüchen nach zulassungskonformer Impfung mit Comirnaty (BNT162b2) gegen SARS-CoV-2 im Bezirk Schwaz

Immune response and breakthrough infections following an in-label vaccination with Comirnaty against SARS-CoV-2 in the district of Schwaz - Shieldvacc-2

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2021-002030-16-AT
Enrollment
3340
Registered
2021-04-29
Start date
2021-05-12
Completion date
Unknown
Last updated
2022-05-16

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

Conditions

SARS-CoV-2 infections MedDRA version: 20.0 Level: LLT Classification code 10021433 Term: Immunization System Organ Class: 100000004865

Interventions

Sponsors

Medizinische Universität Innsbruck, Institut für Virologie
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Participant is = 18 years of age on the day of signing the ICF and provides written informed consent or participant is between 16 and 18 years of age and provides informed consent as well as his/her legal representative/custodial 2. Subject has been already vaccinated with Comirnaty (two doses), with the second dose having been administered within up to 6 weeks (35 days ± 7 days) before study inclusion 3. Subject understands and agrees to comply with study procedures 4. Subject must be willing to be contacted by telephone or willing to complete an eDiary during study participation Are the trial subjects under 18? yes Number of subjects for this age range: 340 F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 2600 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 400

Exclusion criteria

Exclusion criteria: 1. Prior administration of an investigational coronavirus (SARS-CoV, MERS-CoV) vaccine or current/planned simultaneous participation in another interventional study to either prevent or treat COVID-19 2. Participant has a contraindication to blood draws (eg, bleeding disorders) 3. Has participated in an interventional clinical study within 30 days prior to study inclusion

Design outcomes

Primary

MeasureTime frame
Main Objective: Primary objective is to determine whether the level of neutralizing titers at visit 1 differs between individuals that develop a SARS-CoV-2 infection and those that do not develop a SARS-CoV-2 infection ;Secondary Objective: Secondary objective: 1. To compare changes in the level of neutralizing titers between visit 1 vs. visit 2 between individuals that develop a SARS-CoV-2 infection and those that do not develop a SARS-CoV-2 infection 2. To determine the correlation between titers of binding and neutralizing antibodies 3. To quantify the T-cell response and compare it between the two groups 4. To evaluate the clinical course and outcome of COVID-19 diseases after vaccination ;Primary end point(s): The level of neutralizing titers at visit 1 ;Timepoint(s) of evaluation of this end point: Day 1 - day of first blood draw

Secondary

MeasureTime frame
Secondary end point(s): 1. The levels of neutralizing titers at visit 1 and 2 2. The levels of titers of binding and neutralizing antibodies 3. The level of interferon-gamma-signal 4. Number of first occurrences of COVID-19 within the observation period defined as it follows: o Clinical signs indicative of mild systemic illness (fever, smell / taste loss, ….) o Clinical signs indicative of severe systemic illness - Respiratory Rate = 30 per minute, Heart Rate = 125 beats per minute, SpO2 = 93% on room air at sea level or PaO2/FIO2 < 300 mm Hg, OR - Respiratory failure or Acute Respiratory Distress Syndrome (ARDS), (defined as needing high-flow oxygen, non-invasive or mechanical ventilation, or ECMO), evidence of shock (systolic blood pressure < 90 mmHg, diastolic BP < 60 mmHg or requiring vasopressors), OR - Significant acute renal, hepatic or neurologic dysfunction, OR - Admission to an intensive care unit or death ;Timepoint(s) of evaluation of this end point: Day 1 (first blood draw, 4 - 6 weeks after second vaccination with comirnaty) and Day 180 (second blood draw) Between those days weekly antigen-tests are performed to detect breakthrough infections

Countries

Austria

Contacts

Public ContactPrincipal Investigator

Medizinische Universität Innsbruck, Institut für Virologie

wegena.borena@i-med.ac.at0043512900371737

Outcome results

None listed

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