After developing and rolling out COVID-19 vaccines at record speed, drugmakers are already facing variants of the rapidly-evolving coronavirus that may render them ineffective, a challenge that will…
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Source:https://www.ndtv.com/world-news/why-tweaking-the-coronavirus-vaccines-wont-be-simple-2359593
Published on: Thu, 28 Jan 2021 21:17:21 +0530
