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Pyrethroid resistance in tropical bedbugs, Cimex hemipterus, associated with use of treated bednets.

Authors
  • Myamba, J
  • Maxwell, C A
  • Asidi, A
  • Curtis, C F
Type
Published Article
Journal
Medical and veterinary entomology
Publication Date
Dec 01, 2002
Volume
16
Issue
4
Pages
448–451
Identifiers
PMID: 12510899
Source
Medline
License
Unknown

Abstract

When Tanzanian villages were provided with pyrethroid-treated bednets, bedbugs (Cimicidae) disappeared; however, after about 6 years they have re-appeared in these villages. Using a newly devised test-kit, susceptibility tests of bedbugs Cimex hemipterus (Fabricius) from five of these villages showed that there is resistance to permethrin and alphacypermethrin in bedbugs from each of the villages, in contrast to those from five villages without treated nets. Circumstantial evidence indicates that bedbug resistance to pyrethroid insecticides may evolve more readily in villages with incomplete coverage rates of treated bednets, allowing bedbug infestations to become re-established. Bedbugs have not returned to a village where nearly all the beds have been provided with pyrethroid-treated bednets for 14 years.

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