Ohio Vector Practice Exam

The mosquito responsible for transmitting LaCrosse encephalitis is Aedes triseriatus. This species is commonly known as the eastern treehole mosquito and is primarily found in the eastern United States. It is particularly associated with wooded areas and is known to breed in natural containers such as tree holes, which contribute to its role in the ecology of various arboviruses, including LaCrosse encephalitis.

LaCrosse encephalitis is primarily transmitted to humans through the bite of an infected Aedes triseriatus mosquito. The virus cycles between several vertebrate hosts, particularly small mammals, with the mosquito acting as the vector that spreads the virus to humans. Understanding this relationship is crucial for developing strategies in surveillance and prevention of the disease, especially in areas where these mosquitoes are prevalent.

The other mosquitoes listed do not play a significant role in transmitting LaCrosse encephalitis. For example, Culex pipiens is more commonly associated with West Nile virus, while Culiseta melanura is involved in the transmission of Eastern Equine Encephalitis, and Anopheles mosquitoes are mainly recognized for their role in malaria transmission rather than encephalitis. This specificity of Aedes triseriatus in relation to LaCrosse