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News Release
RI Department of Environmental Management
235 Promenade Street, Providence, RI 02908
(401) 222-2771 TDD/(401) 222-4462

For Release: August 27, 2012
Contact: Gail Mastrati 222-4700 ext. 2402

DEM ANNOUNCES EEE FOUND IN MOSQUITOES TRAPPED IN TIVERTON AND WEST NILE VIRUS FOUND IN MOSQUITOES TRAPPED IN NORTH PROVIDENCE

PROVIDENCE - The Department of Environmental Management announces that test results from one mosquito pool, or sample, from a trap set in a rural area in central Tiverton has been confirmed positive for Eastern Equine Encephalitis (EEE). It is the second time this year that EEE has been positively identified in Rhode Island. The positive EEE result was from a Culex species that feeds on birds and mammals.

The positive EEE finding came from mosquitoes trapped by DEM staff on August 20 and tested at the RI Department of Health (HEALTH) laboratory. The results were confirmed today.

In addition, a sample of mosquitoes also collected on August 20 in the Lymansville section of North Providence has tested positive for West Nile Virus (WNV). The positive WNV result was also from a Culex species that bites both birds and humans.

Test results from the remaining pools of mosquitoes trapped on August 20 are still pending.

According to Alan Gettman, Ph.D., DEM's mosquito abatement coordinator, the positive results are confirmation that there are infected mosquitoes in the environment. Therefore, all Rhode Islanders should take extra care to protect themselves, particularly when mosquito-biting activity is high.

Biting activity depends on several conditions. It generally is greatest from dusk to dawn. During the day it decreases in sunny areas at lower temperatures and increases in shady areas at higher temperatures. Biting activity also generally increases with high humidity and with low wind.

Personal protection is the first line of defense against mosquitoes that can carry diseases such as West Nile Virus and EEE and is by far the most effective way of avoiding infection. People should routinely use mosquito repellent and cover up when mosquito-biting activity is greatest. They should place mosquito netting over playpens and carriages outside, and be sure that screens are in good repair. Mosquito repellent should contain no more than 30 percent DEET, and it should not be used on infants.

This year, to date in Rhode Island, three pools of mosquitoes have tested positive for West Nile Virus and two pools have tested positive for Eastern Equine Encephalitis.

Mosquitoes in Rhode Island are trapped every week statewide by DEM staff and tested at the RI Department of Health laboratory. DEM will normally report mosquito test results once a week on a routine basis, with additional reports as necessary. Routine test results from remaining pools of mosquitoes trapped during the week of August 20 will be included in next week's announcement.

For online information about mosquito-borne diseases, go to DEM's website, www.state.dem.ri.gov, and click on "Public Health Updates", or go to the HEALTH website, www.health.ri.gov, and click on "E" (Eastern Equine Encephalitis) or "W" (West Nile Virus) under "Health Topics".

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