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Doctor applying a bandage a patient's arm after an immunization.

A new requirement for vaccine studies could delay the availability of new vaccines. Aire Images/Moment RF/Getty Images hide caption

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Aire Images/Moment RF/Getty Images

Shots - Health News

RFK Jr. to require placebo-controlled studies for new vaccines

May 1, 2025 • The Department of Health and Human Services says it will require new vaccines to be tested against a placebo, which could complicate and delay Food and Drug Administration approval of many vaccines.

RFK Jr. to require placebo-controlled studies for new vaccines

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Coronavirus FAQ: Why do so many folks say to drink lots of water before your vaccine?

Jennifer Swanson/NPR

Goats and Soda

Coronavirus FAQ: Why do so many folks say to drink lots of water before your vaccine?

October 22, 2021 • Lots of people suggest guzzling a tall glass of H2O before the injection. But is there any evidence it'll reduce side effects or improve vaccine effectiveness? Also: painkiller protocols!

Coronavirus FAQs: Can I Drink Between Vaccine Doses? What Is 'Vaccine Efficacy'?

People are wondering if alcohol in between vaccine doses might have an impact on your body's reaction to the vaccination. Michele Abercrombie/NPR hide caption

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Michele Abercrombie/NPR

Goats and Soda

Coronavirus FAQs: Can I Drink Between Vaccine Doses? What Is 'Vaccine Efficacy'?

March 12, 2021 • People who've had dose 1 are wondering ... can I have a few drinks before dose 2 or will that muck things up? Also: Do you really understand the concept of "vaccine efficacy"? It's complicated!