I have read here on Wikipedia the following passage:

Head lice infestations might serve as a protection against body lice by inducing cross-resistance.

I understand that cross-resistance for different kind of poisons or drugs, but what is cross-resistance against lice?

1 Answer 1


They're saying that a head lice infestation might provoke the immune system into more effectively resisting body lice infestations.

  • Thank you, sorry i just don't understand how body may resist such an infestations. I mean if it is some sickness when body may have antibodies, but in case of lices, how this works?
    – Yola
    May 16, 2017 at 4:57
  • @Yola That would make a good question.
    – Carey Gregory
    May 16, 2017 at 14:42

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