CNN —

Here’s a look at information and statistics concerning vaccines in the United States. For vaccines related to coronavirus, see Coronavirus Outbreak Timeline Fast Facts.

Facts

The Centers for Disease Control and Prevention (CDC) provides vaccine recommendations by age , as well as by disease .

For more than 100 years, there has been public discord regarding vaccines based on issues like individual rights, religious freedoms, distrust of government and the effects that vaccines may have on the health of children.

Exemptions to vaccines fall into three general categories: medical, religious and philosophical.

As of June 2, 2025, 30 states and the District of Columbia have enacted legislation allowing religious exemptions from vaccines, and 15 states allow philosophical

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