Healthcare workers tested for COVID-19 antibodies in major screening study

NCT ID NCT04370119

First seen Nov 20, 2025 · Last updated May 15, 2026 · Updated 23 times

Summary

This study tested over 1,000 healthcare workers for COVID-19 and tracked their antibody levels over time. The goal was to understand how the virus spreads and how the immune system responds. Participants gave blood samples and nasal swabs to check for current or past infection.

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Contacts and locations

Locations

  • Greifswald University Medicine

    Greifswald, Germany

Conditions

Explore the condition pages connected to this study.