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Screening for COVID-19 and Monitoring of Serological Responses to SARS-CoV-2 in Healthcare Workers

Screening for SARS-CoV-2-Infections and Monitoring of Serological Responses to SARS-CoV-2 in Healthcare Workers

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04370119
Acronym
SeCo
Enrollment
1092
Registered
2020-04-30
Start date
2020-04-27
Completion date
2025-04-27
Last updated
2025-11-20

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

Conditions

SARS-CoV-2

Keywords

Serology, antibody formation, epidemiology, immunity

Brief summary

The main objectives of this study are 1) to establish the prevalence of SARS-CoV-2 in asymptomatic healthcare workers (HCWs) in an early phase of community spread as well as 2) to monitor the future spread of the disease by assessing serological responses to SARS-CoV-2 in symptomatic and asymptomatic HCWs over time and 3) to improve the assessment of the immune response and its protective effect as well as the assessment of infectivity of affected HCWs and 4) to evaluate the value and significance of antibody formation and serological antibody tests and 5) to be able to evaluate possible future preventive and / or therapeutic approaches against SARS-CoV-2, e.g. to assess vaccination effects

Detailed description

This study aims to collect information on staff working at the Greifswald University hospital. Over a 5 year period, a maximum of 12 study visits per participant are planned. At each visit, nasal/throat swabs (for PCR testing) and/or blood samples (to assess immunological responses, e.g. for SARS-CoV-2 antibody testing) will be collected. This will help to gain a better understanding of viral load and immunological responses, e.g. antibody development and their effects over time. At study visit 2 - 12, participants will also be asked to fill in a questionnaire (asking for SARS-CoV-2 risk factors, perceived risk, impact of the pandemic on their quality of life, their interest in getting a SARS-CoV-2 vaccine/their SARS-CoV-2 vaccination status and vaccination side effects). The remaining blood samples will be stored in a repository for future research. The study is part of a modular SARS-CoV-2-research programme of the University Medicine Greifswald.

Interventions

DIAGNOSTIC_TESTNasal swab

SARS-CoV-2 PCR

DIAGNOSTIC_TESTSerum testing

Anti-SARS-CoV2 S protein IgG ELISA, serological changes after SARS-CoV-2 vaccination

Sponsors

Friedrich Loefler Institute for Animal Health
CollaboratorUNKNOWN
EUROIMMUN AG
CollaboratorUNKNOWN
University Medicine Greifswald
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

1. \>= 18 years of age 2. Willing and able to complete a written consent form 3. Willing to have blood samples stored for future research 4. Healthcare worker employed at Greifswald University Hospital

Exclusion criteria

1. \< 18 years of age 2. Decline to participate

Design outcomes

Primary

MeasureTime frameDescription
Number of people with detectable antibodies to SARS-CoV-21 yearAnti-SARS-CoV-2 S protein IgG ELISA/ Anti-SARS-CoV-2 NCP IgG ELISA

Secondary

MeasureTime frameDescription
Number of people with detectable SARS-CoV-2 nucleic acidFirst study visit (baseline)SARS-CoV-2 PCR

Other

MeasureTime frameDescription
Number of people with detectable antibodies to SARS-CoV-2First study visit (baseline)Anti-SARS-CoV-2 S protein IgG ELISA/ Anti-SARS-CoV-2 NCP IgG ELISA
Number of people with detectable SARS-CoV-2 nucleic acid2 yearsSARS-CoV-2 PCR
SARS-CoV-2 risk factors, perceived risk of infection, impact of the pandemic on quality of life, vaccination interest/vaccination status, vaccination side effects1 yearAs assessed by a questionnaire
Serological changes after SARS-CoV-2 vaccination7 days to 6 months after vaccinationSerological changes after SARS-CoV-2 vaccination, cohort 3 only

Countries

Germany

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 15, 2026