The path to a Covid-19 vaccine

It is not easy to introduce a new drug in the market. Before a medicine or vaccine is introduced for public use, pharmaceutical researchers, scientists and doctors do a lot of background work

from India News | Latest News Headlines & Live Updates from India - Times of India https://ift.tt/3onOjn1

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White House says no change to mask mandate

from World News Headlines, Latest International News, World Breaking News - Times of India https://ift.tt/3BoPIAm

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