Yadav PD, Sapkal GN, Ella R, Sahay RR, et al. Neutralization of Beta and Delta variant with sera of COVID-19 recovered cases and vaccinees of inactivated COVID-19 vaccine BBV152/Covaxin. J Travel Med 2021 Jul 6. pii: 6316247. doi: 10.1093.
PMID: 34230972