This study is testing a new vaccine called mRNA, which helps the body fight against both the seasonal flu and COVID-19. An *mRNA vaccine* uses a small piece of the virus's genetic material to teach the body how to protect itself. The study is for healthy adults aged 65 to 85. Participants will receive either the new vaccine, a regular flu shot, or a COVID-19 shot. Researchers will check for any side effects or health issues and collect blood samples to see how well the vaccine works in building protection.
- The study involves multiple visits and blood sample collections over time.
- Participants should be healthy or have stable medical conditions.
- Potential risks include side effects similar to those of standard vaccines.
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