The study will find out why people have been contracting covid even after taking booster shots , said Pragya Yadav, the NIV scientist who isolated the first SARS-CoV2 virus in 2020.
source https://www.livemint.com/news/india/niv-pune-to-study-efficacy-of-covid-vaccines-against-variants-booster-dose-coverage-low-in-india-11681234592457.html
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