Rhode Island Announces Additional EEE, WNV Cases

PROVIDENCE, R.I. – The Rhode Island Department of Environmental Management (DEM) and Rhode Island Department of Health (RIDOH) issued a warning of recent human cases of both eastern equine encephalitis (EEE) virus and West Nile virus (WNV). 

The Rhode Island State Health Laboratories (RISHL) has confirmed five positive findings of WNV, and the first human case of EEE virus in 2024, according to the RIDOH report.

Last month, DEM conducted an aerial application of mosquito larvicide across 3,000 acres of Chapman Swamp in Westerly and Great Swamp in South Kingstown to reduce mosquito populations and related disease risk, the state reported. As mosquito season continues, the MDAG will continue to evaluate the risk level statewide and will provide updates if any further mosquito control measures are planned. 

Approximately 30 percent of people with EEE virus die, and many survivors have ongoing neurological problems, RIDOH reported. 

The Asian Tiger Mosquito has become prevalent in Rhode Island urban environments, and it is expected to be common again this season, according to the RIDOH report. It is notable as a daytime biter encountered in shaded backyards. The Asian tiger mosquito is known to transmit several diseases, including WNV.