New vaccine protects previously infected and against Delta

Beijing: Chinese biotechnology company Clover Biopharmaceuticals said that a large trial shows its two-dose Covid-19 vaccine is 79% effective against the fast-spreading Delta variant.

The vaccine candidate is 92% effective against the Gamma variant first identified in Brazil, and 59% against the Mu variant first detected in Colombia, according to joint statement issued by the company and the Coalition for Epidemic Preparedness Innovations, a nonprofit organisation that funded the clinical trial.