NH DHHS Announces Second Human Case of EEE This Season

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

(DHHS) is announcing the second human case of Eastern Equine Encephalitis

(EEE) this season in an adult from Hopkinton. The first human case of EEE

in New Hampshire this season was confirmed on August 22nd in Conway, NH.

Other EEE positive tests this year include 6 mosquito batches and a mule;

there have been no positive test results so far for West Nile Virus (WNV).

Due to this human case, the risk level for human illness in Hopkinton will

be raised to high, and the surrounding towns to moderate risk. Other areas

of the State currently considered at high risk are the Conway and Candia


“Mosquito seasons are unpredictable,” said DHHS Public Health Director Dr.

José Montero. “West Nile Virus was very common the last couple of years but

EEE was not as prevalent. This acts as a reminder that viruses change,

mosquitoes fly, and there are many factors involved, so since we do know

that both of these disease are present in mosquitoes in New Hampshire, it

is important that everyone remember to take steps to prevent mosquito bites

to themselves and their loved ones.”

In 2013, there were 27 positives for EEE, including 24 mosquito batches and

3 animals. EEE and WNV are transmitted by the bite of infected mosquitoes.

Symptoms of EEE disease often appear 4 to 10 days after someone is bitten

by an infected mosquito. If you or someone you know is experiencing

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

provider. EEE is a more serious disease than WNV and carries a high

mortality rate for those who contract the serious encephalitis form of the

illness. Symptoms may include high fever, severe headache, stiff neck, and

sore throat. There is no specific treatment for the disease, which can lead

to seizures and coma.

You can protect yourself and your family from WNV and EEE with a few simple

steps, such as using effective mosquito repellant, wearing long sleeves and

pants at dawn and dusk when mosquitoes are most active, removing standing

water from around your house so mosquitoes do not have a place to breed,

and by checking 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 http://www.dhhs.nh.gov/dphs/cdcs/arboviral/index.htm and the Centers for

Disease Control and Prevention website at www.cdc.gov . For questions

contact the DHHS Bureau of Infectious Disease Control at 603-271-4496.

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Prevention Guidelines for West Nile Virus and

Eastern Equine Encephalitis Virus

NH Department of Health and Human Services, Division of Public Health


1. Eliminate standing water and other mosquito breeding locations.

In warm weather, mosquitoes can breed in any puddle that lasts more than 4


· Remove old tires from your property.

· Dispose of tin cans, plastic containers, ceramic pots, or other

containers. Don’t overlook containers that have become overgrown

by aquatic vegetation.

· Drill holes in the bottom of recycling containers that are left


· Make sure roof gutters are clean and draining properly.

· Clean and chlorinate swimming pools and hot tubs. If not in use,

keep empty and covered and keep covers free of standing water.

· Aerate garden ponds or stock them with fish.

· Turn over wheelbarrows and change water in birdbaths at least

twice weekly.

· Turn over plastic wading pools when not in use.

· Remind or help neighbors to eliminate breeding sites on their


2. Be aware of where mosquitoes live and breed and keep them from entering

your home.

· Mosquitoes lay their eggs in standing water. Weeds, tall grass, and

bushes provide an outdoor home for adult mosquitoes, including

several species commonly associated with West Nile Virus and Eastern

Equine Encephalitis Virus.

· Mosquitoes can enter homes through unscreened windows or doors, or

broken screens. Make sure that doors and windows have tight-fitting

screens. Repair or replace all screens in your home that have tears

or holes.

· Resting mosquitoes can often be flushed from indoor resting sites by

using sweeping motions under beds, behind bedside tables etc. and

once in flight, exterminated prior to sleeping at night.

3. Protect yourself from mosquito bites.

· If outside during evening, nighttime, and dawn hours when mosquitoes

are most active and likely to bite, children and adults should wear

protective clothing such as long pants, long-sleeved shirts, and


· Consider the use of an effective insect repellent, such as one

containing DEET. A repellent containing 30% or less DEET

(N,N-diethyl-methyl-meta-toluamide) for children and adults. Use DEET

according to the manufacturer's directions. Children should not apply

DEET to themselves. Repellents that contain Picaridin or oil of lemon

eucalyptus have also been determined to be effective.

· Vitamin B, ultrasonic devices, incense, and bug zappers have not been

shown to be effective in preventing mosquito bites.

For more information on West Nile Virus or Eastern Equine Encephalitis

Virus, call the NH Department of Health and Human Services toll-free West

Nile Virus Information Line at

866–273–NILE (6543), or visit the West Nile Virus Website at

www.dhhs.nh.gov .