結果 : how long does the flu shot stay in your system
1:22

The Flu Shot Explained

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3:06

How Long Will COVID-19 Vaccine Immunity Last?

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How The Flu Shot Works In Your Body • Healthsplained

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'About how long does the vaccine stay in your body?'

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Flu and You: Getting the Right Vaccine for Your Age

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How long will the COVID-19 vaccine last?

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1:00

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4:38

The flu vaccine: explained

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1:11

WATCH: How long does protection from a COVID-19 vaccine last? Will I need a booster?

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2:59

How Long Are You Contagious With The Flu?

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Covid Vaccine Study Finds Links to Health Conditions

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How Effective Is The Flu Shot? Doctor Explains Its Efficacy

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COVID-19 vs. Flu vs. RSV: How to tell the difference between respiratory infections

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King of the Viruses: What Flu Does to the Body

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