BEIJING - Positive progress has been made in the development of monovalent and multivalent vaccines against the Omicron variants, a senior Chinese health official told a press conference on Saturday.
BEIJING, March 20 (Xinhua) The following is a summary of published science and technology news of China. COVID-19 VACCINES Positive progress has been made in
Positive progress has been made in the development of monovalent and multivalent vaccines against the Omicron variants, a senior Chinese health official told a press conference on Saturday.