Travelers to tropical and subtropical regions are at risk of contracting dengue, particularly in areas with frequent or continuous transmission. Popular tourist destinations such as the Caribbean, Central America, and Southeast Asia are among the affected regions. Symptoms of dengue include high fever, severe headache, and rash, with severe cases potentially leading to hospitalization. The CDC advises travelers to be vigilant, as dengue outbreaks can occur unexpectedly, even in areas with sporadic or uncertain risk.