Topic summary
La Crosse encephalitis

La Crosse encephalitis is an encephalitis caused by the La Crosse virus which has a mosquitovector (Ochlerotatus triseriatus synonym Aedestriseriatus).
La Crosse encephalitis virus (LACV) is one of a group of mosquito-transmitted viruses that can cause encephalitis, or inflammation of the brain. LAC encephalitis is rare; in the United States, about 80–100 LACV disease cases are reported each year, although it is believed to be under-reported due to minimal symptoms experienced by many of those affected.