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Browse 1,603 clinical trials for covid-19. Find studies that match your criteria and connect with research centers.
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Showing 601-620 of 1,603 trials
NCT05928455
The goal of this clinical trial is to assess the immunogenicity and safety following a heterologous booster dose of recombinant SARS-CoV-2 vaccine (CHO cell) LYB001 in adults 18-59 years of age completed two- or three-dose inactivated COVID-19 vaccine. The main questions it aims to answer are: * whether LYB001 group is better on immunogenicity than the control group of inactivated vaccine? * whether LYB001 group has better performance on safety than the control group of inactivated vaccine, such as the lower adverse reaction rate?
NCT04672395
The purpose of this double-blind, randomized, controlled study is to evaluate the efficacy, immunogenicity, reactogenicity and safety of an adjuvanted recombinant severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) trimeric spike (S)-protein subunit vaccine (SCB-2019) for the prevention of SARS-CoV-2-mediated COVID-19 in Participants Aged 12 Years and Older.