[Preprint] Phase 1/2 RCT: A booster dose is immunogenic and will be needed for older adults who have completed two doses vaccination with CoronaVac.

A booster dose is immunogenic and will be needed for older adults who have completed two doses vaccination with CoronaVac: a randomised, double-blind, placebo-controlled, phase 1/2 clinical trial – medRxiv

Commentary on Twitter

6-month follow-up of people aged 60+ in early trials of Sinovac's CoronaVac in China. Authors conclude antibodies dropped too far, but a booster dose improved signs of immunity https://t.co/ooQ5M9gJZC (Preprint)

— Hilda Bastian, PhD (@hildabast) August 9, 2021