Alaska

Arboviral diseases, Eastern equine encephalitis virus disease in Alaska

Imported from NNDSS: Arboviral diseases, Eastern equine encephalitis virus disease Track Arboviral diseases, Eastern equine encephalitis virus disease activity and outbreaks specific to Alaska.

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What is Arboviral diseases, Eastern equine encephalitis virus disease?

EEE virus was first identified in horses in Massachusetts in 1831, leading to its name. The first confirmed human cases occurred in 1938, also in Massachusetts. It remains one of the most severe arboviral diseases in the United States due to its high fatality rate and potential for permanent neurological impairment in survivors.

Symptoms

  • Mild/Systemic Disease (less common): Fever, chills, malaise, joint pain, muscle aches, lasting 1-2 weeks.
  • Severe/Encephalitic Disease (more common in human cases):
  • Sudden onset of headache, high fever, chills, vomiting.
  • Disorientation, seizures, drowsiness, coma.
  • Permanent neurological damage is common in survivors.

Transmission

EEE virus is primarily transmitted to humans and horses through the bite of infected mosquitoes. The virus circulates naturally between birds and mosquitoes, mainly *Culiseta melanura*. So-called 'bridge vectors,' such as *Coquillettidia perturbans* and *Aedes sollicitans*, then transmit the virus from infected birds to humans and horses, who are considered 'dead-end hosts' as they do not develop sufficient viremia to infect other mosquitoes.

Contagious Period: Varies by disease

Prevention

  • Use EPA-registered insect repellents (e.g., DEET, picaridin) when outdoors.
  • Wear long sleeves and pants during dawn and dusk, when mosquitoes are most active.
  • Eliminate standing water around your home to reduce mosquito breeding sites (e.g., empty tires, buckets, flowerpots).
  • Ensure windows and doors have intact screens to keep mosquitoes out.
  • There is no human vaccine available for EEE virus; a vaccine is available for horses.

Alaska Health Resources

Local health department information and state-specific prevention guidance

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Our AI-powered surveillance continuously monitors Arboviral diseases, Eastern equine encephalitis virus disease activity across Alaska. We track data from state health departments, local hospitals, CDC reports, and 50+ global health sources to provide early warning of emerging threats.

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Alaska Health Department

For official state health alerts, vaccination locations, and public health guidance specific to Alaska, visit your state health department's website.

→ Alaska Department of Health → Find Arboviral diseases, Eastern equine encephalitis virus disease Vaccination Near You → CDC Travel Health Notices

Protecting Yourself in Alaska

Whether you live in Alaska, are traveling there, or have family in the state, understanding Arboviral diseases, Eastern equine encephalitis virus disease prevention is essential. Follow these evidence-based prevention measures:

Prevention Measures

  • Use EPA-registered insect repellents (e.g., DEET, picaridin) when outdoors.
  • Wear long sleeves and pants during dawn and dusk, when mosquitoes are most active.
  • Eliminate standing water around your home to reduce mosquito breeding sites (e.g., empty tires, buckets, flowerpots).
  • Ensure windows and doors have intact screens to keep mosquitoes out.
  • There is no human vaccine available for EEE virus; a vaccine is available for horses.

When to Seek Care

If you experience symptoms of Arboviral diseases, Eastern equine encephalitis virus disease in Alaska, contact your healthcare provider immediately. Early diagnosis and treatment improve outcomes significantly.

Emergency symptoms: If you experience severe symptoms, difficulty breathing, or signs of dehydration, call 911 or go to your nearest emergency room.

Expert Resources & References

Trusted information from leading health organizations

CDC

Official guidance from the U.S. Centers for Disease Control and Prevention

View CDC Resources →

WHO

Global disease surveillance and guidelines from the World Health Organization

View WHO Resources →

Research

Latest peer-reviewed research and clinical studies

View Research →

Medically Reviewed Content

Disease information on Virus Watcher is reviewed by our Chief Epidemiologist, a former CDC lead analyst for FluSight forecasting. Outbreak data is aggregated from verified sources including BEACON, ProMED, WHO, CDC, and 50+ national health agencies. This information is for educational purposes and should not replace professional medical advice.

Last reviewed: 2026-06-03

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