In Brazil, there are more young people in ICUs than old. Brazil was banking on a Chinese vaccine to crush the surge. But, a study says the shot is just 50.7% effective. China is now considering mixing 2 different shots. Is that even possible? WION's Palki Sharma tells you more.

Gravitas: Chinese vaccine 'just 50.7%' effective against Brazilian variant

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Gravitas: Chinese vaccine 'just 50.7%' effective against Brazilian variant