EEE information

Public Health Advisory

September 17, 2019

Two Additional Human EEE Cases Diagnosed in Rhode Island, including in Coventry Child; Rhode Islanders Urged to 'Fight The Bite'


The Rhode Island Department of Health (RIDOH) and the Rhode Island Department of Environmental Management (DEM) are announcing that two additional Rhode Islanders have been diagnosed with Eastern Equine Encephalitis (EEE) this year. Rhode Island’s total case count for human EEE cases for 2019 is now three. These cases were confirmed by tests done at the Centers for Disease Control and Prevention (CDC).

The two people whose diagnoses are being announced today have both been discharged from the hospital and are recovering. Based on the time of symptom onset, it is believed that both people contracted EEE in late August. The first person is a child younger than 10 years old who lives in Coventry. The second person is in their 50s from Charlestown. On September 9th, the first person who was diagnosed with EEE this year in Rhode Island passed away. That person lived in West Warwick. All three people contracted the illness before areas of critical risk for EEE were aerially sprayed with pesticide between September 8th and September 10th.

In addition to these human diagnoses, EEE was confirmed in a deer from Exeter this week.

“This has been a year with significantly elevated EEE activity, and mosquitoes will remain a threat in Rhode Island until our first hard frost, which is still several weeks out,” said RIDOH’s Deputy Director Ana Novais. “Personal mosquito-prevention measures remain everyone’s first defense against EEE. If possible, people should limit their time outdoors at sunrise and sunset. If you are going to be out, long sleeves and pants are very important, as is bug spray.”

“Spraying effectively reduces the risk of mosquito-borne disease but if does not eliminate the risk completely,” said DEM Director Janet Coit. “Personal protection always is essential to further minimize the risk, and we hope that Rhode Island’s #FightTheBite campaign helps raise public awareness about how important it is to avoid being bitten by mosquitoes.”

DEM and RIDOH are considering the next steps in Rhode Island’s EEE response. Those steps could include additional aerial spraying based on information about human cases, cases in other mammals, mosquito activity, and findings in neighboring states. Broad and targeted notification will be done in advance of any additional aerial spraying.

The four critical risk areas that were previously sprayed were (1) an area in northern Rhode Island (parts of Burrillville, North Smithfield, and Woonsocket); (2) parts of Westerly, Hopkinton, and Charlestown; (3) all of West Warwick and parts of Coventry, Cranston, Scituate, Warwick, East Greenwich, and West Greenwich; and (4) all of Central Falls, Pawtucket, and North Providence and parts of Providence, East Providence, Smithfield, Lincoln, and Cumberland.

To date this year, EEE has been detected by RIDOH’s State Health Laboratories in six mosquito pools: two from Central Falls, three from Westerly, and one from Block Island. Additionally, one horse from Westerly has tested positive for EEE. RIDOH and DEM had previously announced that two deer had tested positive for EEE (one from Coventry and one from Richmond). A third deer from Exeter has been diagnosed this week. Deer, like horses, cannot transmit EEE to humans. However, they are an indication that infected mosquitoes are present in the area and people need to continue to take precautions.


Smart Scheduling recommendation remains in place

RIDOH, with support of the Rhode Island Interscholastic League, strongly recommends that schools throughout the state use smart scheduling for all of outdoor activities until the first frost which is still several weeks away (sometime between October 15 and 30). RIDOH is grateful to the many schools and organizations throughout the state that are following this recommendation. Please note that these recommendations are the same for all communities in the state (high risk and critical risk).

  • Schools should avoid scheduling games and practices during early morning or dusk hours. RIDOH’s recommendation is that these outdoor activities should conclude 30 minutes prior to dusk. This will help minimize the risk of mosquito bites for players, coaches, officials and spectators alike — which may include individuals more vulnerable to severe illness, such as the elderly and people with weakened immune systems.
  • RIDOH also recommends that schools and organizations remind all participants in outdoor activities to protect themselves from mosquito bites. They should:
    • Avoid outdoor activities during dawn and dusk. Mosquitoes are most active at this time.
    • Wear an insect repellent with no more than 30 percent DEET
    • Wear long-sleeve shirts and long pants when possible to avoid exposing skin to mosquitoes.

Any school is encouraged to contact the RI Department of Health directly at 401-222-2577 with any specific questions and representatives from RIDOH will be happy to provide you with the resources and guidance needed as you make your smart scheduling decisions.


Rhode Islanders Urged to #FightTheBite

All Rhode Islanders are urged to continue to #FightTheBite by taking mosquito-prevention measures until the first hard frost of the year (typically mid to late October in Rhode Island).

Protect yourself

  • Put screens on windows and doors. Fix screens that are loose or have holes.
  • At sunrise and sundown (when mosquitoes that carry EEE are most active), consider rescheduling outdoor activities that occur during evening or early morning. If you must be outside, wear long-sleeved shirts and long pants and use bug spray.
  • Use EPA-approved bug spray with one of the following active ingredients: DEET (20-30% strength); picaridin, IR3535; and oil of lemon eucalyptus or paramenthane. Always read the label and follow all directions and precautions.
  • Do not use bug spray with DEET on infants under two months of age. Children should be careful not to rub their eyes after bug spray has been applied on their skin. Wash children's hands with soap and water to remove any bug spray when they return indoors.
  • Put mosquito netting over playpens and baby carriages.

Get rid of mosquito breeding grounds

  • Get rid of anything around your house and yard that collects water. Just one cup of water can produce hundreds of mosquitoes; an unused tire containing water can produce thousands of mosquitoes.
  • Clean your gutters and downspouts so that they can drain properly.
  • Remove any water from unused swimming pools, wading pools, boats, planters, trash and recycling bins, tires, and anything else that collects water, and cover them.
  • Remove or treat any shallow water that can accumulate on top of a pool cover. Larvicide treatments, such as Mosquito Dunks can be applied to kill immature mosquitoes. This environmentally-friendly product is available at many hardware and garden stores and on-line.
  • Change the water in birdbaths at least two times a week and rinse out birdbaths once a week.

Educational resources

RIDOH has the following resources available for download or to share electronically with parents and your communities:

Two styles of 12x15 posters related to preventing mosquito-borne disease are also available to order at no cost from RIDOH's Distribution Center (we are increasing the previous two per school limit from 2 to 10). These posters may also be downloaded and printed or shared electronically:

Sample social media post:

EEE (Eastern Equine Encephalitis) continues to be very active in Rhode Island this year. #FightTheBite: Use an EPA-approved repellent like DEET, avoid the outdoors at dusk and dawn, wear long sleeves/pants, use nets over strollers, close screens, dump standing water. If you see a lot of mosquitoes or get a bite, get out of that area. To learn more, visit health.ri.gov/mosquito or see the Rhode Island Department of Health's fact sheet: http://www.health.ri.gov/publications/factsheets/EasternEquineEncephalitis.pdf.

Other resources

The Rhode Island Department of Health (RIDOH) encourages all Rhode Island schools, day care centers, camps, and other organizations that bring children outdoors to adopt these voluntary and customizable procedures (click on link to download template) for tick and mosquito bite prevention and tick removal. These procedures represent best practices to prevent mosquito and tick bites and remove ticks properly in order to prevent Lyme disease and other tick- and mosquito-borne borne illnesses. Please consider adopting these procedures and distributing them to parents.


Also, a reminder that a limited number of “Rhode Island Tick Detective Workbook for Kids” are available for elementary schools to order at no cost. To request copies, complete this online sign-up form no later than Friday, Sept. 30. To aid in presenting this material, we also have developed a curriculum guide to help educators present the material in the classroom.


RIDOH News and Press Releases: www.health.ri.gov/news/

Connect with us:

Rhode Island Department of Health

Three Capitol Hill

Providence, Rhode Island 02908-5097


Health Information Line: 401-222-5960 / RI Relay 711

www.health.ri.gov