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DHHS Identifies Positive Test for EEE in an Animal
Finding Leads to Increase in Risk Level
Public Information Office
(603) 271-9391

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Communicable Disease Control and Surveillance
Publish Date:
September 4, 2014

Concord, NH - The New Hampshire Department of Health and Human Services (DHHS) is today announcing a positive test result for Eastern Equine Encephalitis (EEE) in a mule in the town of Candia. This finding raises the risk level for human illness in Candia from "Moderate" to "High." The surrounding towns of Auburn, Chester, Hooksett, and Raymond will be increased from "Low" to "Moderate" risk.

"This is the first animal in New Hampshire to test positive for EEE this season," said DHHS Public Health Director Dr. José Montero. "This is another indicator that there are EEE virus and West Nile Virus infected mosquitoes in the State. The end of August through mid-October is the time that people are at the greatest risk for contracting a mosquito-borne disease. It is so important for everyone in the State, no matter where you live, to take simple precautions to prevent being bitten by mosquitoes."

So far this season New Hampshire's Public Health Lab has tested 2,908 batches of mosquitoes. Of those, 6 tested positive for EEE and none have tested positive for West Nile Virus (WNV). Additionally, one person was diagnosed with EEE virus infection in August.

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 provider.

  • Protect yourself and your family from WNV and EEE with these simple steps:
  • Use an effective mosquito repellant when you’re outside
  • Wear long sleeves and pants at dawn and dusk when mosquitoes are most active
  • Remove standing water from around your home so mosquitoes do not have a place to breed
  • Check doors and windows to ensure screens are in place and in good condition to prevent mosquitoes from entering your home

For more information about EEE and West Nile Virus visit the DHHS website at and the Centers for Disease Control and Prevention website at For questions contact the DHHS Bureau of Infectious Disease Control at 603-271-4496.

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New Hampshire Department of Health and Human Services
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