Plain-English translation of NCT05774093 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
Researchers want to understand how long your body's natural protection against COVID-19 lasts and whether you might catch it again. This study will follow about 300 hospital workers for 48 weeks, checking their COVID-19 antibody levels (which show if your immune system has seen the virus before) and testing them periodically to see if they get infected again during that time.
Scientists still don't know exactly how long immunity to COVID-19 lasts or who is most likely to get reinfected. By tracking people's antibody levels and monitoring them over nearly a year, researchers hope to better predict who might be at higher risk and improve our understanding of COVID-19 immunity.
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You'll have about 7 visits spread across 48 weeks. At your first visit, you'll give a blood sample so researchers can check your antibody levels and divide you into groups. Then you'll return every 4–8 weeks for blood tests and sometimes swabs from your nose or throat. If you develop any COVID-19 symptoms during the study, you'll need to get tested within 48 hours and report the results to the research team. If you get infected, the study ends for you early.
AI-generated summary from trial data · Jun 3, 2026 · Not medical advice
China
Sponsor
Sun Yat-sen University
Enrollment target
~300 participants
Started
March 2023
Primary completion
April 2024
This trial's estimated completion date has passed — the record may not be fully up to date.
Last updated on clinicaltrials.gov in March 2023.
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