https://timesofindia.indiatimes.com/life-style/health-fitness/health-news/types-of-covid-strains-that-have-circulated-so-far/articleshow/104853223.cms
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10/31/23 at 10:30am
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The Times of India
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TIMESOFINDIA.COM
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The virus that causes COVID-19, SARS-CoV-2, is always evolving, that much is known about it. Since the pandemic's start, several notable variations ha
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