Overview
- The CDC issued a global Level 1 advisory this week after higher dengue activity, more infections in returning U.S. travelers, and more than 525 U.S. cases reported so far in 2026.
- The notice lists 16 destinations with elevated risk: Afghanistan, Bangladesh, Bolivia, Colombia, the Cook Islands, Cuba, Guyana, Maldives, Mali, Mauritania, New Caledonia, Pakistan, Samoa, Sudan, Timor‑Leste, and Vietnam.
- Level 1 is the CDC’s lowest tier, which signals travelers should keep plans in place but practice usual precautions.
- Officials urge EPA‑registered insect repellent, long sleeves and pants, screened or air‑conditioned lodging, and avoiding mosquito bites for several weeks after returning to reduce the chance of local spread.
- Dengue can move from fever and aches to life‑threatening bleeding or shock, there is no specific antiviral treatment, and a vaccine is not widely recommended for most short‑term U.S. travelers.