22-07-2021, 05:42 AM
July 21 (Reuters) - Sinopharm's COVID-19 vaccine elicited weaker antibody responses against the Delta variant, based on the first published study of its effect against the more contagious version.
https://www.reuters.com/business/healthc...021-07-21/
https://www.reuters.com/business/healthc...021-07-21/