Clinical Research Glossary

Emergency Use Authorization (EUA) Emergency Use Authorization (EUA)


A process to make a treatment or vaccine available during a public health emergency, before all research is complete, and before full approval is granted.

Example of Emergency Use Authorization (EUA) in a sentence

Regulators decide whether to allow an Emergency Use Authorization.

More Info

An Emergency Use Authorization (EUA) makes medical treatments and vaccines available when the public’s health is at risk, such as during a pandemic.

Under an EUA, medicines and vaccines are still being tested but the approval process is fast-tracked in order to make interventions available more quickly.

An EUA applies to the USA only. Other countries have different rules and regulations.

Other info to think about when joining a study

The term “Emergency Use Authorization” may be something you heard during the Covid pandemic. If a treatment or vaccine is made available under an EUA, you may hear that there are still research studies to collect more data about the product.

This is an icon for concepts in this glossary that have regulatory processes. The icon depicts a winding arrow with a questionnaire and pill icon representing a research study on one end, and a checkmark on a shield at the pointed end.
This graphic represents concepts that follow a regulatory review process.

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