One study found that getting Novavax as a booster after mRNA "may enhance the persistence and durability of vaccine-mediated immunity compared to mRNA options" with slower decay rate compared to an mRNA booster dose and less side effects than mRNA boosters ( https://www.tandfonline.com/doi/full/10.1080/14760584.2023.2232020 ). H/T: @daniel_e_park 13/