About this trial
The purpose of this study is to evaluate humoral immunogenicity after 2 doses of mRNA-1018-H5, and to evaluate the safety and reactogenicity of mRNA-1018-H5 in adults ≥18 years of age.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Healthy as determined by medical evaluation including medical history; and physical examination. Participants with clinically stable chronic medical conditions are permitted.
Is a person of nonchildbearing potential (PONCBP) OR
Is a person of childbearing potential (POCBP)
A POCBP must have a negative highly sensitive pregnancy test at Screening and on the day of the first dose of study intervention.
Disqualifiers
Participant is acutely ill or febrile (body temperature ≥ 38.0 degrees Celsius [°C]/100.4 degrees Fahrenheit [°F]) within 72 hours prior to or at the Screening Visit or Day 1.
History of myocarditis, pericarditis, or myopericarditis.
History of Guillain-Barre syndrome.
Reported history of congenital or acquired immunodeficiency, immunosuppressive condition, asplenia, or recurrent severe infections disease.
Trial design
Parallel
Treatments tested in this trial
mRNA-1018-H5
Biological/VaccineSterile liquid for injection.
Placebo
Biological/VaccineSterile liquid for injection.
Treatment groups
Trial outcomes
Primary outcomes
Percentage of Participants With Hemagglutination Inhibition (HAI) Titer ≥ 1:40 at Day 43
HAI Titer \>=1:40.
Percentage of Participants With Seroconversion at Day 43, as Measured by HAI Assay
Seroconversion is defined as a Day 43 titer ≥1:40 if baseline is \<1:10 or a 4-fold or greater rise if baseline is ≥1:10 in HAI titer measured by HAI assay.
Number of Participants with Solicited Local and Systemic Adverse Reactions (ARs)
Number of Participants with Unsolicited Adverse Events (AEs)
Secondary outcomes
Geometric Mean Titer (GMT) of Anti-H5N1 Antibodies at Day 43, as Measured by Microneutralization (MN) Assay
GMT of HAI Antibodies at Days 22 and 205, as Measured by HAI Assay
GMT of HAI Antibodies at Days 22 and 205, as Measured by MN Assay
Percentage of Participants with HAI Titers at Different Cut-Offs
Cutoff included \>= 1:80.
Sponsors and contacts
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