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DEM: August 24 West Nile/EEE Status Update

PROVIDENCE - The Department of Environmental Management announces that test results from the remaining 101 mosquito pools, or samples, from 32 traps set statewide during the week of August 12 are negative for both West Nile Virus and Eastern Equine Encephalitis. Results from 239 pools collected from 45 traps set on August 12 and August 17 are pending at the Rhode Island State Health Laboratories.

Last week DEM reported that a sample of mosquitoes collected on August 12 in the central area of North Kingstown tested positive for West Nile Virus (WNV). The sample of 7 mosquitoes is a species that can bite both birds and humans. West Nile Virus is increasingly being detected in mosquito samples trapped in neighboring states. Mosquito-borne diseases are more prevalent in late summer and early fall, and risk typically lasts until the first frost.

However, there have been no reports of Eastern Equine Encephalitis (EEE) in Rhode Island or in the neighboring states of Massachusetts or Connecticut so far this season.

Throughout the mosquito season, residents are encouraged to protect themselves by eliminating mosquito breeding grounds and avoiding mosquito bites. 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.

Eliminate mosquito breeding grounds from yards by removing anything that holds standing water, such as old tires, buckets, junk and debris, clean gutters so that they drain correctly, and maintain swimming pools properly. Mosquitoes breed in standing water. Just one cup of standing water can produce hundreds of mosquitoes. Avoid mosquito bites by using screens on windows and doors, covering up at dawn and dusk, and putting mosquito netting over playpens and baby carriages when they are outside. Also, use mosquito repellent, but with no more than 30 percent DEET. Do not use repellent on infants.

Mosquitoes are trapped every week statewide by DEM staff and tested at the Rhode Island State Health Laboratories. DEM will normally report mosquito test results once a week on a routine basis from late June through September, with additional reports as necessary. Test results from mosquitoes trapped this week will be included in next week's announcement. Positive mosquito test results will generally trigger additional trapping to assess risk.

Visit HEALTH's website for additional prevention tips and for Rhode Island-specific data.

Related links

  • Department or agency: Department of Environmental Management
  • Online: http://www.dem.ri.gov/
  • Release date: 08-24-2015

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