Arboviral Surveillance

Eastern Equine Encephalitis (EEE), Jamestown Canyon Virus (JCV), 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). U.S. CDC's also tests mosquitoes for the presence of JCV. 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

2023 Maine Arboviral Positive Results

Surveillance Species Collection Date Town County Agent
Mosquito Aedes cantator July 11, 2023 Wells York JCV
Mosquito Aedes cantator July 11, 2023 Wells York JCV
Mosquito Aedes cantator July 11, 2023 Wells York JCV
Mosquito Culiseta melanura September 7, 2023 Lebanon York EEE
Veterinary Emu September 13, 2023 Piscataquis EEE
Veterinary Emu September 13, 2023 Piscataquis EEE
Veterinary Emu September 13, 2023 Piscataquis EEE
Veterinary Emu September 13, 2023 Piscataquis EEE
Veterinary Horse September 18, 2023 Piscataquis EEE

Weekly Updates

Resources