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With more than one-third of the world’s population living in areas at risk for transmission, dengue infection is a leading cause of illness and death in the tropics and subtropics. As many as 100 million people are infected yearly. Dengue is caused by any one of four related viruses transmitted by mosquitoes. There are not yet any vaccines to prevent infection with dengue virus (DENV) and the most effective protective measures are those that avoid mosquito bites. When infected, early recognition and prompt supportive treatment can substantially lower the risk of developing severe disease.

Dengue has emerged as a worldwide problem only since the 1950s. Although dengue rarely occurs in the continental United States, it is endemic in Puerto Rico, and in many popular tourist destinations in Latin America and Southeast Asia; periodic outbreaks occur in Samoa and Guam.

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Key dengue information...

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Critical information for travelers...

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Avoid getting infected whether at home or on travel...

Picture with group of peopleIf You Think You Have Dengue...

Symptoms and actions to take...

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Transmission, information on epidemics and stats...

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Mosquito that spreads dengue and its ecology...

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Tools for clinicians and laboratorians...

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Dengue educational tools...

 
Contact Us:
  • Centers for Disease Control and Prevention
    Dengue Branch
    1324 Calle Cañada
    San Juan, Puerto Rico
    00920-3860
  • 800-CDC-INFO
    (800-232-4636)
    TTY: (888) 232-6348
  • New Hours of Operation
    8am-8pm ET/Monday-Friday
    Closed Holidays
  • cdcinfo@cdc.gov
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