COVID-19 Vaccine Moderna Intramuscular Injection
Lot.3005791: two of us*
Does my COVID booster or additional dose have to be the same brand that I got before?
No, you can mix and match brands. The FDA(Food and Drug Administration) has authorized three vaccine boosters — Pfizer-BioNTech, Moderna and Janssen/Johnson & Johnson — and determined that it is safe to get a COVID-19 vaccine booster or additional dose that is a different brand than your initial dose or doses. https://www.hopkinsmedicine.org/health/conditions-and-diseases/coronavirus/booster-shots-and-third-doses-for-covid19-vaccines-what-you-need-to-know
comparison of Neutralizing antibody levels:
Pfizer–Pfizer–Moderna 31.7*
Pfizer–Pfizer–Pfizer 20.0
Moderna–Moderna–Pfizer 11.5
Moderna–Moderna–Moderna 10.2
Atmar RL, et al. MedRxiv. Oct 15, 2021./Munro APS, et al. Lancet Dec 18-31, 2021.