Check a health claim

Paste a message you saw online. We will tell you if it matches a claim we have reviewed.

Result: TRUE

Our reviewed evidence supports this claim.

The hepatitis B vaccine helps protect against a liver infection.

Hepatitis B is a virus that infects the liver. The vaccine is the best way to prevent it. You need all the shots in the series.

WHO says hepatitis B is preventable with a vaccine that gives nearly 100% protection. CDC says the best way to prevent it is to be vaccinated.

Keep in mind: Ask a health worker which vaccine doses you or your child still need.

Reliable sources (2)

Hepatitis B (fact sheet) (opens in a new tab) World Health Organization (WHO) https://www.who.int/news-room/fact-sheets/detail/hepatitis-b
Hepatitis B Basics (opens in a new tab) US Centers for Disease Control and Prevention (CDC) https://www.cdc.gov/hepatitis-b/about/index.html

Last verified: 25 October 2026

Always ask a doctor. This tool is for learning. It is not medical advice.

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