BEIJING — Two COVID-19 vaccines from Chinese companies including Sinopharm triggered immunity against a highly transmissible coronavirus variant first found in South Africa, but their effect appeared weaker, a small-sample lab study released on Tuesday showed.
Variants of the virus have stirred concern that they might weaken effects of vaccines and treatments developed prior to their emergence.
Twelve serum samples each taken from recipients of two vaccines developed by a subsidiary of China National Pharmaceutical Group (Sinopharm) and a unit of Chongqing Zhifei Biological Products retained neutralizing activity against the South African variant, their researchers said in a …
Keep on reading: Sinopharm vaccine remained active vs South African variant, effect reduced