The Centers for Disease Control and Prevention (CDC) has issued a global travel alert for dengue fever, signaling an increase in cases among travelers returning to the U.S. This alert is classified as a “Level 1,” the lowest level, which advises travelers to practice standard precautions.
Dengue is transmitted through infected mosquitoes and can cause symptoms such as fever, headache, muscle pain, rashes, and in severe cases, hemorrhaging or organ failure. While many infected individuals may experience mild symptoms or none at all, there is a risk of severe illness, especially in vulnerable populations like children and the elderly.
Countries with elevated dengue risks include Afghanistan, Bangladesh, Bolivia, Colombia, Cuba, and Vietnam, among others. In the U.S., over 525 dengue cases have been reported so far in 2026.
To minimize infection risk, the CDC recommends using insect repellent, wearing long clothing, and staying in accommodations with air conditioning or window screens. While travel should not be canceled, travelers are encouraged to stay cautious, particularly when visiting tropical and subtropical regions.
