https://www.hindustantimes.com/india-news/covid19-vaccines-could-be-8-times-less-effective-against-delta-variant-study-101625502029670.html
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7/5/21 at 5:29pm
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Hindustan Times
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hindustantimes.com
The study was conducted on 100 healthcare workers at three centres in India, including Delhi’s Sir Ganga Ram Hospital. | Latest News India
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