Arboviral Surveillance

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. 

Arboviral Surveillance Archives

2018 Maine Arboviral Positive Results

Surveillance Species Collection Date Town County Agent
Human August 15, 2018 Cumberland WNV
Mosquito Culex pipiens August 21, 2018 Kittery York WNV
Veterinary Horse September 15, 2018 York WNV
Mosquito Culiseta melanura September 18, 2018 York York WNV
Mosquito Culex pipiens/restuans September 5, 2018 Bangor Penobscot WNV
Mosquito Culex pipiens/restuans September 6, 2018 Bangor Penobscot WNV
Human September 15, 2018 Cumberland WNV
Human September 16, 2018 Knox Jamestown Canyon Virus


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