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. Side effects were injection site pain, fatigue and headaches. Moderna previously reported a summary of the results from the company-sponsored trial in 8,000 people.
The mRNA technology is used in approved COVID-19 and RSV shots, but has not yet been approved for
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