Eastern equine encephalitis: an emerging arboviral disease threat, Maine, 2009.

The research article focuses on the spread of the Eastern Equine Encephalitis (EEE) virus in Maine, USA in 2009, where despite traditionally limited activity and no reported human cases, the year saw an unprecedented number of animal cases, suggesting a potential risk to humans.

Objective of the Article

• The main objective of the research is to review the activity of the EEE virus in the state of Maine in the year 2009 and to evaluate current testing practices of possible human EEE cases in the area.

Methodology

• The researchers conducted an extensive survey of all reported cases of EEE virus activity submitted to the Maine Centers for Disease Control for the year 2009.

Results

• In 2009, there were several fatal cases of EEE identified in Maine, including 15 horses, 1 llama, and 3 flocks of pheasants. The activity of the virus was seen extending into the central region of the state.
• Despite the increase in animal cases, no human cases of EEE were identified. However, it was noticed that the diagnostic testing practices of most meningitis and encephalitis cases among humans were inadequate to thoroughly exclude EEE.

Conclusions and Recommendations

• Greater efforts are needed to define the expanding range of the EEE virus in Maine as the cases in animals show that the virus is spreading into new areas.
• There’s also a need for education of healthcare providers regarding the importance of appropriate testing for this dangerous disease, especially considering the lack of thorough diagnostic testing practices to detect the presence of EEE in meningitis and encephalitis cases among humans.

Significance of the Findings

• The research findings are highly significant as they suggest an expanding range of the EEE virus in Maine, which had until then been limited primarily to the state’s southernmost area. This may indicate an increased risk of the virus spreading to humans in future.
• The findings also highlight the need for improved diagnostic testing and better education of healthcare providers to promptly identify and manage EEE cases, thereby potentially preventing a larger outbreak of this serious disease.