Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) La Crosse encephalitis ?
    ### Response:
    La Crosse (LAC) encephalitis is a mosquito-borne virus that was first described in La Crosse, Wisconsin in 1963. Since then, it has been reported in several Midwestern and Mid-Atlantic states. The LAC virus is one of many mosquito-transmitted viruses that can cause an inflammation of the brain (encephalitis).
    