Below is an instruction from Human. Write a response.
    ### Instruction:
    Who is at risk for Parasites - Lice - Head Lice? ?
    ### Response:
    In the United States, infestation with head lice (Pediculus humanus capitis) is most common among preschool- and elementary school-age children and their household members and caretakers. Head lice are not known to transmit disease; however, secondary bacterial infection of the skin resulting from scratching can occur with any lice infestation.
    