Which genus is primarily associated with transmitting La Crosse Encephalitis to small rodents?

Which genus is primarily associated with transmitting La Crosse Encephalitis to small rodents?

• A. Aedes
• B. Ochlerotatus
• C. Culex
• D. Anopheles

Answer: (B)

La Crosse Encephalitis is transmitted in a mosquito–rodent cycle, with the primary vector being a treehole mosquito that feeds on small mammals. In many current classifications, that mosquito is placed in the genus Ochlerotatus (often referred to as Ochlerotatus triseriatus, formerly Aedes triseriatus). Because this genus/title corresponds to the main vector in this rodent-based transmission cycle, Ochlerotatus is the genus most closely associated with spreading La Crosse Encephalitis to small rodents. The other genera listed are tied to different vectors or diseases and do not represent the primary rodent-vertebrate transmission in this context.

La Crosse Encephalitis is transmitted in a mosquito–rodent cycle, with the primary vector being a treehole mosquito that feeds on small mammals. In many current classifications, that mosquito is placed in the genus Ochlerotatus (often referred to as Ochlerotatus triseriatus, formerly Aedes triseriatus). Because this genus/title corresponds to the main vector in this rodent-based transmission cycle, Ochlerotatus is the genus most closely associated with spreading La Crosse Encephalitis to small rodents. The other genera listed are tied to different vectors or diseases and do not represent the primary rodent-vertebrate transmission in this context.