Study evaluated several heterologous SARS-CoV-2 vaccine regimens; no efficacy data but there was increased antibody production on study days 15 and 29 after booster shots from Moderna and Pfizer.
15 Oct, 2021 | 02:49h | UTCHeterologous SARS-CoV-2 Booster Vaccinations: Preliminary Report – medRxiv
Commentary: Study: Mixing and Matching COVID-19 Booster Shots Is Effective, Safe – U.S. News
Commentary on Twitter
So yes, mRNA vaccines are great at generating antibodies but what does that mean? Where is the efficacy data? How come JnJ gets really great efficacy at preventing symptomatic COVID and severe disease with low antibodies? T-cells? Still much to learn. https://t.co/YwKUyogAhQ
— Daniel Griffin MD PhD (@DanielGriffinMD) October 13, 2021