The Upstate Global Health Institute is currently seeking individuals ages 65+ to help advance research for an investigational COVID-19 and Influenza combination vaccine. The purpose of this study is to see if combination of both Influenza and COVID-19 vaccines are safe and can help the body produce antibodies which may help fight of both Influenza and COVID-19. This clinical trial will also help to understand how people respond to different dose levels of an investigational combination COVID-19 and flu vaccine compared to receiving a COVID-19 or flu vaccine alone.