Head lice (Pediculus humanus capitis) infestation is most frequent on children aged 3–10 and their families.[31] Females get head lice twice as often as males,[31] and infestation in persons of Afro-Caribbean or other black descent is rare because of hair consistency.[31] But these children may have nits that hatch and the live lice could be transferred by head contact to other children.[32]