Shipley

Researchers are evaluating the immune response and safety of the mRNA-1018-H5 vaccine against pandemic influenza in healthy adults aged 18 years and older. The study aims to measure how well the vaccine triggers protective antibodies and to monitor any side effects or reactions. This is a phase 3 randomized trial sponsored by ModernaTX, Inc., focusing on adults without significant health issues or with stable chronic conditions. Participants will be randomly assigned to receive either the mRNA-1018-H5 vaccine or a placebo. Both are given as intramuscular injections on Day 1 and Day 22. The vaccine is a sterile liquid designed for injection. The study includes a blinded design to ensure unbiased safety and immunogenicity assessments. Participants may be monitored for up to 205 days to assess antibody levels and adverse events. During the study, participants will have blood tests to measure antibody responses on Days 22, 43, and 205. Researchers will track local and systemic reactions for 7 days after each injection and any adverse events for up to 205 days. The main outcomes include the percentage of participants achieving protective antibody levels, immune response strength, and safety measures. Participants will be involved in regular visits and evaluations throughout the study period.