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Dengue Alert: 16 Countries Warned

WorldwideWednesday, March 25, 2026

The U.S. Centers for Disease Control and Prevention (CDC) has removed a Level 1 travel advisory issued on March 23 that highlighted dengue fever risks in 16 countries.
A Level 1 notice is the lowest tier of CDC alerts, meaning travelers should maintain standard precautions but do not need to cancel trips.


What is Dengue?

  • Transmission: Mosquito‑borne virus (Aedes species).
  • Symptoms: High fever, severe headache, joint and muscle pain; can progress to internal bleeding and organ failure.
  • Current Trend: Rising global activity with more U.S. travelers returning infected.

Countries on the Advisory

  • Afghanistan
  • Bangladesh
  • Bolivia
  • Colombia
  • Cook Islands
  • Cuba
  • Guyana
  • Maldives
  • Mali
  • Mauritania
  • New Caledonia
  • Pakistan
  • Samoa
  • Sudan
  • Timor‑Leste
  • Vietnam

Each country has reported high local cases or an uptick in U.S. infections.


Prevention Tips

  1. Insect Repellent

    • Use EPA‑registered products containing DEET or picaridin.
  2. Protective Clothing

    • Wear long sleeves, pants, and socks.
  3. Stay Indoors

    • Prefer air‑conditioned or screened rooms.
  4. Timing

    • Avoid outdoor activities at dawn and dusk when mosquitoes are most active.
  5. Post‑Travel Vigilance

    • Continue protection for several weeks to prevent local spread.

Treatment Overview

  • No Specific Cure: Management focuses on supportive care.
  • Rest, acetaminophen for fever and pain, ample fluids.
  • Vaccination: A vaccine exists but is not widely available for short‑term travelers.
  • Severity: Most cases are mild; severe forms can be life‑threatening, underscoring the need for vigilance.

Bottom line: While dengue remains a risk in these regions, maintaining routine precautions should keep travelers safe. Stay informed and protect yourself from mosquito bites to reduce the chance of infection.

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