Measles

Measles is a viral respiratory infection that spreads easily from person to person. Getting vaccinated against measles is safe, and it is the most effective way to prevent infection.

Measles can have serious health complications, especially for certain groups of people. People who are not vaccinated or have not received their full series of vaccines are also at higher risk of infection.

The measles self-assessment tool can help you determine if you are protected against measles, what to do if you are experiencing symptoms, were exposed to the measles virus, or are unsure about your risk.

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This item was last modified on July 25, 2025