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How Do Vaccines Work To Protect Us? WHO Expert Answers

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WHO's Dr Katherine O'Brien explains how vaccines work to protect the body from infections. Her remarks as the United Kingdom and the United States prepare for mass vaccinations against the highly contagious coronavirus. [Credit: World Health Organisation - https://www.who.int]

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Category
Asia
Tags
NDTV 24x7, Dr Katherine O'Brien, WHO
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