Outbreak Notice Update: Dengue, Tropical and Subtropical Regions

Situation Information

Dengue fever is the most common cause of fever in travelers returning from the Caribbean, Central America, and South Central Asia.1 This disease is caused by four similar viruses (DENV-1, -2, -3, and -4) and is spread through the bites of infected mosquitoes.

Dengue infections are frequently reported from most tropical countries of the South Pacific, Asia, the Caribbean, the Americas, and Africa. Although dengue transmission often occurs in both rural and urban areas, dengue infections are most frequently reported from urban settings.

Since early 2009, an increased number of dengue cases have been reported from countries throughout several regions of the world.