Countries like United States, India and Brazil has become a key testing ground of COVID-19 vaccine and has approved late stage clinical trials for four vaccines that are under development.
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» Brazil will have a COVID-19 vaccine by June 2021, says regulator>]
Brazil will have a COVID-19 vaccine by June 2021, says regulator
Brazil will have a COVID-19 vaccine by June 2021, says regulator>] Brazil will have a COVID-19 vaccine by June 2021, says regulator

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