Human only parasite: You acquire head lice after exposure to an infected persons living lice. This may be by sharing head ware, scarfs, combs etc. Or during close encounters with the lice in bedding, clothing etc. It is not passed by animals or non human carriers.Lice mature within 10 days and begin laying eggs attached to hair. They feed on human blood, cause itching, but do not carry diseases.
Answered 3/3/2014
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