Cuba Battles Deadly Mosquito-Borne Viruses: What's Happening?

Deadly Outbreak

Cuba is currently grappling with a serious health crisis as mosquitoes spread two dangerous viruses: chikungunya and dengue. Since July, these viruses have caused 33 deaths, many of which were young children.

Spread and Impact

The outbreak began in the western part of Cuba and has now spread nationwide. Both viruses are not new to the region.

Chikungunya

• First identified in Africa in the 1950s.
• Symptoms: Fever, joint pain, and fatigue.
• Recovery: Most people recover within a week.
• High-risk groups: Babies, older adults, and those with underlying health conditions can develop severe complications.

Dengue

• Symptoms: Flu-like symptoms, which can be life-threatening in severe cases.
• Previous outbreaks: Cuba dealt with chikungunya in 2014, but this outbreak is more challenging to control.

Root Causes

Several factors are exacerbating the crisis:

• Poor sanitation and garbage accumulation.
• Water shortages, leading to mosquito breeding in stored water.
• Economic challenges, including fuel and medical supply shortages, worsened by U.S. sanctions and the pandemic.

Global Travel Warnings

The U.S. Centers for Disease Control (CDC) has issued travel advisories for Cuba and other affected countries. They recommend:

• Vaccination (where available).
• Use of insect repellent.
• Wearing long sleeves and pants.

Global Impact

Other countries currently dealing with active chikungunya cases include:

• Bangladesh
• China
• Kenya
• Madagascar
• Somalia
• Sri Lanka

In the U.S., New York reported its first locally acquired case in October 2025.