LOS ANGELES - According to a study by the National Institutes of Health on whether or not it is safe to "mix and match" COVID-19 vaccines found that people who received the single-dose Johnson & Johnson shot are better off getting a booster from Pfizer or Moderna.
The study, which has yet to be peer reviewed, was released Wednesday and found that people who initially got the J&J vaccine displayed better protection when they got Moderna or Pfizer’s mRNA vaccine as opposed to another dose of the J&J vaccine, identified by its scientific name Ad26.COV.S."Persons who received an mRNA-based booster vaccination had a four-fold increase in their neutralization response more frequently than those who were boosted with Ad26.COV.S," study authors.