CNN Health
Zamira Rahim
CNNUpdated 9:33 AM ET
Tue February 2
CNN)After
Sputnik
Sanjay Gupta
Meera Senthilingam
Jamie Gumbrecht
Jessica Firger
Zahra Ullah
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Russia
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6 hours ago ... An interim analysis of Russia's Sputnik V vaccine has found it to be 91.6%
effective against symptomatic Covid-19 and 100% effective againstĀ ...