TAMPA, Fla. - Mixing and matching booster shots may give better protection against COVID-19, according to a new government-funded study published Wednesday.The new study from the National Institutes of Health looked at the immune response in 458 fully vaccinated people with nine different booster combinations."It's actually a full-on series and then mix and match booster.
They split them up into three groups and gave them to a booster from one of the three vaccines," said Dr. Michael Teng, a virologist with University of South Florida Health who looked at the study.There were about 50 people in each of the nine groups, and volunteers were given an extra dose of their original vaccine or a different manufacturer’s vaccine booster shot.