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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
Avian American Crow Sagadahoc WNV
Avian American Crow Kennebec WNV
Avian American Crow Cumberland WNV
Avian Wild Turkey Waldo EEE
Avian American Crow Knox WNV
Avian American Crow Cumberland WNV
Avian American Crow Penobscot WNV
Avian American Crow Hancock WNV
Avian American Crow Cumberland WNV
Avian American Crow Penobscot WNV
Avian American Crow Somerset WNV
Avian Cooper's Hawk Lincoln WNV
Human Waldo WNV
Avian American Crow Cumberland WNV
Avian American Crow Penobscot WNV
Avian Cooper's Hawk Cumberland WNV
Avian American Crow Oxford WNV
Avian American Crow Kennebec WNV
Avian American Crow York WNV
Mosquito Aedes communis/sticticus Orono Penobscot JCV
Mosquito Aedes communis/sticticus Orono Penobscot JCV
Mosquito Aedes communis/sticticus Orono Penobscot JCV
Mosquito Aedes abserratus/punctor Alfred York JCV
Avian American Crow Penobscot WNV
Avian Red-tailed Hawk Oxford WNV

Weekly Report Updates

2025

2024

2019

2016