
Immune correlates analysis of the mRNA-1273 COVID-19 vaccine efficacy clinical trial.
In the coronavirus efficacy (COVE) phase 3 clinical trial, vaccine recipients were assessed for neutralizing and binding antibodies as correlates of risk for COVID-19 disease and as correlates of protection. These immune markers were measured at the time of second vaccination and 4 weeks later, with values reported in standardized World Health Organization international units. All markers were inversely associated with COVID-19 risk and directly associated with vaccine efficacy. Vaccine recipients with postvaccination 50% neutralization titers 10, 100, and 1000 had estimated vaccine efficacies of 78% (95% confidence interval, 54 to 89%), 91% (87 to 94%), and 96% (94 to 98%), respectively. These results help define immune marker correlates of protection and may guide approval decisions for messenger RNA (mRNA) COVID-19 vaccines and other COVID-19 vaccines.
Duke Scholars
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Related Subject Headings
- Young Adult
- Vaccine Efficacy
- Spike Glycoprotein, Coronavirus
- Sensitivity and Specificity
- SARS-CoV-2
- Randomized Controlled Trials as Topic
- Middle Aged
- Male
- Immunogenicity, Vaccine
- Humans
Citation

Published In
DOI
EISSN
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- Young Adult
- Vaccine Efficacy
- Spike Glycoprotein, Coronavirus
- Sensitivity and Specificity
- SARS-CoV-2
- Randomized Controlled Trials as Topic
- Middle Aged
- Male
- Immunogenicity, Vaccine
- Humans