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Persistent head lice following multiple treatments: evidence for insecticide resistance in Pediculus humanus capitis

Publication Type:Journal Article
Year of Publication:2000
Authors:A. M. Bailey, Prociv P.
Journal:Australasian Journal of Dermatology
Volume:41
Issue:4
Pagination:250 - 254
Date Published:2000
ISBN Number:0004-8380
Keywords:animals, Child, Preschool, Follow-Up Studies, humans, Infant, Insecticide Resistance, Lice Infestations/diagnosis/therapy, Pediculus, Recurrence, scalp dermatoses
Abstract:

Viable head lice were found on the scalps of two family members following multiple topical insecticide treatments. The possibility of reinfestation had been reliably excluded. Persistent infestation could be diagnosed only after cutting the hair and combing repeatedly, which allowed visualization of juvenile (nymphal) and adult lice. Insecticide-resistant headlouse infestations are probably much more common than is generally realised and may persist unnoticed, so that more aggressive approaches will be needed to eradicate these ectoparasites from individuals and communities.

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