'Why does the Pfizer vaccine have to be cold?' Dr. Murphy answers viewer COVID-19 questions 12 ...

Retrieved on: 2020-12-18 11:15:00

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'Why does the Pfizer vaccine have to be cold?' Dr. Murphy answers viewer COVID-19 questions 12 .... View article details on hiswai:

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Pfizer had reported some production issues with the vaccine, U.S. Secretary of Health and Human Services Alex Azar said on Wednesday, Reuters ...

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