NH DHHS Identifies Additional Horse Positive for EEE

New Positives Lead to Increase in Risk Levels

Concord, NH - The New Hampshire Department of Health and Human Services

(DHHS) today announces a positive test result for eastern equine

encephalitis (EEE) in a horse from Deerfield. This finding necessitates

increasing the risk level in Deerfield from “Remote” to “High.” Towns

surrounding Deerfield, including Northwood, Nottingham, Candia, Raymond,

Epsom, Allenstown and Hooksett will be raised to “Moderate.”

“Even though it is October,” said Dr. José Montero, Public Health Director

at DHHS, “there are still mosquitoes around and therefore the risk for more

cases of EEE and West Nile virus. Until there is a killing frost that

covers the entire State it is important that people protect against

mosquito bites no matter where you live.”

So far this season New Hampshire’s Public Health Lab has tested 5,121

batches of mosquitoes. Of those, 14 have tested positive for WNV and 20

tested positive for EEE. One person was also diagnosed with WNV, and two

other horses were found positive for EEE earlier in the season. There have

been no positive tests for animals with WNV.

EEE is a serious disease that carries a high mortality rate for those who

contract the serious encephalitis form of the illness. Symptoms may include

high fever, severe headache, and stiff neck. There is no treatment for the

disease, which can lead to seizures and coma. Symptoms usually occur 4 to

10 days after being bitten. Symptoms of WNV disease often appear 4 to 10

days after being bitten. If you or someone you know is experiencing

flu-like symptoms, including fever and headache, contact your local medical


Questions about EEE and WNV can be answered by calling the toll free

EEE/West Nile Virus information line at 1-866-273-6453. You can also find

extensive information about both diseases on our website


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(See attached file: Risk Map_October_8_2013.pdf)

(See attached file: Mosquito Precautions 2013 Final.pdf)