CDC Responds to Dengue

A rising health threat

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CDC supports laboratory testing and research to help identify and prevent dengue.

Dengue cases have risen at an alarming rate in recent years. In 2023, there were more than 5 million cases reported from 80 countries, with at least 23 countries reporting dengue outbreaks. That number has more than doubled in 2024 so far, and a major outbreak is occurring in the U.S. territory of Puerto Rico.

Hitting Mosquitoes with All Available Tools

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Hitting Mosquitoes with All Available Tools
Integrated mosquito management combines methods to control mosquitoes and slow the spread of dengue.

Sharing Dengue Expertise in Puerto Rico

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Sharing Dengue Expertise in Puerto Rico
CDC and partner health educators in Puerto Rico trained community groups about dengue prevention.

CDC's Most (un)Wanted Mosquitoes

A graphic entitled: "Wanted dead or alive." Beneath are mugshots of the Aedes aegypti and Aedes albopictus mosquitoes. Below the images the graphic reads: "These mosquitoes are wanted for spreading viruses like dengue."
CDC's Most (un)Wanted Mosquitoes
Learn about Aedes mosquitoes and how to protect your family from diseases they spread like dengue.

Severe dengue: Know the Warning Signs

doctors examine an X-ray of a dengue patient
Severe Dengue: Know the Warning Signs
Severe dengue is a medical emergency. It can start after fever goes away. Know the warning signs.

Dengue on the Rise: Get the Facts

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Dengue on the Rise: Get the Facts
Essential information about dengue cases, symptoms, how it spreads, and prevention tips.
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Content Source
National Center for Emerging and Zoonotic Infectious Diseases (NCEZID)
About This Page
Published: July 24, 2024
Updated: September 30, 2026

This page was last updated on this date. Updates may include minor edits, image changes, or other modifications to page content.

Reviewed: May 29, 2025

The information on this page was last reviewed by subject matter experts to ensure accuracy.