Evaluation of COVID-19 Immune Barrier and Reinfection Risk
Sun Yat-sen University
300 participants
Mar 6, 2023
OBSERVATIONAL
Conditions
Summary
The goal of this observational study is to evaluate the protective effect of immune barrier on secondary infection after COVID-19 (coronavirus disease 2019) vaccination or COVID-19 virus Omicron B A. 5.2 strain infection by dynamically monitoring the COVID-19 antibody titer, cellular immune function and the occurrence of secondary infection of healthy participants, mainly medical staff in our hospital, to understand the cross protective effect of COVID-19 antibody on different variants of Omicron, and explore the best time to use COVID-19 vaccine to strengthen immunity after Omicron mutant infection.
Eligibility
Plain Language Summary
Simplified for easier understanding
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Locations(1)
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NCT05774093