World’s first conjugate Covid-19 vaccine Soberana 2 has been developed indigenously by which nation?

A. Mexico

B. Canada

C. Cuba

D. Colombia

Explanation:

Cuba has developed the world’s first conjugate Covid-19 vaccine Soberana 2 (Sovereign 2). Cuba’s State-run corporation BioFarma confirmed on July 9, 2021 that its indigenously produced Soberana 2 vaccine showed 91.2% efficacy when delivered with a booster shot of Soberana Plus during phase-3 clinical trials.