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Coronavirus vaccine: India begins world’s biggest drive
![Coronavirus vaccine: India begins world's biggest drive](https://ournewsfortoday.com/wp-content/uploads/2021/01/Coronavirus-vaccine-India-begins-worlds-biggest-drive-780x470.jpg)
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But concerns have been raised over the efficacy of Covaxin because the
regulator’s emergency approval came before the completion of Phase 3 clinical trials. The regulator and the manufacturer have said the vaccine is safe, and that the efficacy data would be available by February.
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