From KTLA Channel 5:
Booster shots will likely be necessary as antibodies from both COVID-19 vaccines and infections wane at the same rate, according to a new UCLA study published Wednesday.
The study published in ACS Nano looked at the two-dose Pfizer and Moderna vaccines, finding that after the second jab, antibody levels decreased an average of 90% within 85 days. That’s the same relatively rapid antibody loss that comes after a natural infection, according to the study.
Senior author of the study, Dr. Otto Yang, said that while more research is needed on the response of the immune system’s long-lasting “memory” T cells to the vaccines, the sharp drop in antibodies suggests that booster vaccinations will likely be needed to maintain protection against the potentially deadly virus.
There has been evidence that immunity from the mRNA vaccines doesn’t just depend on antibodies that dwindle over time, with some experts saying booster shots may only be needed every few years, the Associated Press reported.Reference: https://ktla.com/news/local-news/booster-shots-will-likely-be-required-as-antibodies-from-covid-vaccines-wane-ucla-study/
Steve Parker, M.D.