Mosquito-borne Diseases (Arbovirus)
Surveillance & Data

The 2013 mosquito season has ended.
Most areas of Vermont have experienced a hard frost effectively eliminating the risk for illness for this year.

The Vermont Department of Health is no longer taking dead bird reports. If you see a dead bird, you can bury it or double bag it and put in the trash. Always wear gloves when handling dead animals.

Eastern Equine Encephalitis (EEE)

Positive EEE Test Results

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West Nile Virus

Positive WNV Test Results
**Note: 2002-2012 test results are listed by county

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2013 Mosquito Pool and Veterinary Testing

Mosquito Pool Surveillance and Testing
Pools Tested*
EEE Positive Pools
WNV Positive Pools
2013 Final

Pool = up to 50 mosquitoes of the same species trapped at one site on one night.
Towns where mosquitoes were collected: Alburgh, Benson, Brandon, Bridport, Castleton, Chittenden, Colchester, Cornwall, Fairfax, Goshen, Highgate, Hubbardton, Leicester, Middlebury, Milton, New Haven, North Hero, Orwell, Pittsford, Proctor, Rutland, Salisbury, Shoreham, Sudbury, Swanton, West Rutland, Weybridge, Whiting

WNV was detected in pools collected from Alburg (1), Brandon (2), Colchester (1), Cornwall (1), Farifax (1), Leicester (1), Milton (1), Pittsford (4), Rutland City (2), Shoreham (2), Swanton (1), Whiting (11);

EEE was detected in pools collected from Whiting (15), Sudbury (2), Brandon (2), Leicester (1), Cornwall (1) and Milton (1).


Veterinary Sample Testing
Samples Tested
EEE Positive Samples
WNV Positive Samples
2013 Final

was diagnosed in a horse in Lamoille County.

EEE was diagnosed in two horses in Franklin County.

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Vermont Arbovirus Surveillance and Response Plan

The goal of the State of Vermont Arbovirus Surveillance and Response Plan is to protect the public’s health from an outbreak of West Nile virus or Eastern equine encephalitis (EEE) virus. Information gathered from surveillance activities will inform local policy makers about the level of virus activity and the potential threat to human health. This plan allows the state and local government the flexibility to respond to local situations.

This 2013 update of the 2012 plan includes additional information about responding to EEE virus, which was the cause of human illness for the first time in Vermont in 2012.

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National Data and Resources

West Nile Virus

Eastern Equine Encephalitis

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