1.

Russia has authorised the use of Sputnik Light, a single dose vaccine against COVID-19. Sputnik Light demonstrated how much percent efficacy compared to 91.6 per cent for the two-shot Sputnik V?

A. 74.2
B. 79.4
C. 82.8
D. 85.9
E. 89.2
Answer» C. 82.8


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