Moderna study shows immune response in older adults for a combo flu and COVID-19 shot

A combination shot for flu and COVID-19 using messenger RNA generated antibodies in a study, but U.S. government regulators want to see data on whether the new vaccine protects people from getting sick. Researchers from vaccine-maker Moderna reported in a study published Wednesday that the new combo shot generated a stronger immune response against COVID-19 and most strains of flu than existing standalone shots in people 50 and older. Moderna previously reported a summary of the results from the company-sponsored trial in 8,000 people.