So COVID-19 vaccines aren't perfect. They're still very, very effective

Retrieved on: 2021-05-03 08:15:00

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So COVID-19 vaccines aren't perfect. They're still very, very effective. View article details on hiswai:

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One is that they were exposed to so much virus that their immune system ... "No two immune responses will be the same," said Sujan Shresta of La ...

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