| la crosse virus neuroinvasive disease - missouri, 2009. | la crosse virus (lacv), a california serogroup bunyavirus, is a leading cause of pediatric arboviral encephalitis in the united states and is transmitted primarily by the eastern treehole mosquito (aedes triseriatus). on august 7, 2009, the missouri department of health and senior services (mdhss) was notified of suspected lacv neuroinvasive disease in a boy aged 8 years from northwest missouri. laboratory testing at cdc confirmed lacv infection. an environmental inspection identified multiple v ... | 2010 | 20651642 |