According to a preliminary US research released on Wednesday, those who got a booster dose of Pfizer or Moderna after receiving Johnson & Johnson’s Covid-19 vaccination may benefit from another dosage.
Vaccination with one of three US-approved brands for at least 12 weeks (Pfizer, Moderna, or J&J) was studied on 458 people.
Each of the three groups was then split into three new ones, with each group receiving a booster shot of a different vaccination. There were approximately 50 individuals in each of the nine groups.
15 days following the booster injection, the researchers checked on the status of the patients’ antibodies.
After a J&J booster, antibody levels were four times higher, 35 times higher after a Pfizer booster, and 76 times higher after a Moderna booster among individuals who had initially been vaccinated with J&J.
For people originally inoculated with J&J, antibody levels were four times higher after a J&J booster, 35 times higher after a Pfizer booster and 76 times higher after a Moderna booster.
Antibody levels were also greater in individuals who had gotten Moderna shots initially than in those who had received Pfizer or J&J injections, regardless of whether a booster shot was given.