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Arboviral Surveillance Reports

Eastern Equine Encephalitis (EEE) and West Nile Virus (WNV) are arboviral illnesses spread by the bite of an infected mosquito. Mosquito, animal, and human specimens are tested for the presence of EEE and WNV at Maine's Health and Environmental Testing Laboratory (HETL). Animal specimens may also be tested through the National Veterinary Services Laboratory (NVSL). The State of Maine organizes routine mosquito trapping at selected sites, and routinely tests those mosquitoes for disease. The mosquito trapping season runs from July to September. Maine no longer routinely tests birds.

Maine Arboviral Positive Results

Surveillance Species Collection date Sort ascending Town County Agent
Veterinary Emu Somerset EEE
Veterinary Emu Somerset EEE
Veterinary Emu Somerset EEE
Veterinary Horse Cumberland EEE
Veterinary Emu Somerset EEE
Veterinary Emu Penobscot EEE
Veterinary Emu Penobscot EEE
Veterinary Emu Penobscot EEE
Veterinary Emu Penobscot EEE
Veterinary Horse Waldo EEE

Weekly Report Updates

2025

2024

2019

2016