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Exploring the potential of using cattle for malaria vector surveillance and control: a pilot study in western Kenya.

التفاصيل البيبلوغرافية
العنوان: Exploring the potential of using cattle for malaria vector surveillance and control: a pilot study in western Kenya.
المؤلفون: Njoroge MM; International Centre of Insect Physiology and Ecology, Thomas Odhiambo Campus, 40305, Mbita, Kenya. mnjoroge@icipe.org., Tirados I; Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK., Lindsay SW; Schools of Biological and Biomedical Sciences, Durham University, Durham, DH1 3LE, UK., Vale GA; South African Centre for Epidemiological Modelling and Analysis, University of Stellenbosch, Stellenbosch, South Africa., Torr SJ; Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK.; Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK., Fillinger U; International Centre of Insect Physiology and Ecology, Thomas Odhiambo Campus, 40305, Mbita, Kenya.
المصدر: Parasites & vectors [Parasit Vectors] 2017 Jan 10; Vol. 10 (1), pp. 18. Date of Electronic Publication: 2017 Jan 10.
نوع المنشور: Journal Article; Research Support, Non-U.S. Gov't
اللغة: English
بيانات الدورية: Publisher: BioMed Central Country of Publication: England NLM ID: 101462774 Publication Model: Electronic Cited Medium: Internet ISSN: 1756-3305 (Electronic) Linking ISSN: 17563305 NLM ISO Abbreviation: Parasit Vectors Subsets: MEDLINE
أسماء مطبوعة: Original Publication: London : BioMed Central
مواضيع طبية MeSH: Cattle*, Anopheles/*physiology , Insect Vectors/*physiology , Kenya/*epidemiology , Malaria/*transmission, Animal Husbandry ; Animals ; Anopheles/drug effects ; Biological Assay ; Female ; Insecticides/pharmacology ; Malaria/epidemiology ; Nitriles/pharmacology ; Pilot Projects ; Population Dynamics ; Pyrethrins/pharmacology ; Seasons ; Species Specificity ; Tsetse Flies/drug effects
مستخلص: Background: Malaria vector mosquitoes with exophilic and zoophilic tendencies, or with a high acceptance of alternative blood meal sources when preferred human blood-hosts are unavailable, may help maintain low but constant malaria transmission in areas where indoor vector control has been scaled up. This residual transmission might be addressed by targeting vectors outside the house. Here we investigated the potential of insecticide-treated cattle, as routinely used for control of tsetse and ticks in East Africa, for mosquito control.
Methods: The malaria vector population in the study area was investigated weekly for 8 months using two different trapping tools: light traps indoors and cattle-baited traps (CBTs) outdoors. The effect of the application of the insecticide deltamethrin and the acaricide amitraz on cattle on host-seeking Anopheles arabiensis was tested experimentally in field-cages and the impact of deltamethrin-treated cattle explored under field conditions on mosquito densities on household level.
Results: CBTs collected on average 2.8 (95% CI: 1.8-4.2) primary [Anopheles gambiae (s.s.), An. arabiensis and An. funestus (s.s.)] and 6.3 (95% CI: 3.6-11.3) secondary malaria vectors [An. ivulorum and An. coustani (s.l.)] per trap night and revealed a distinct, complementary seasonality. At the same time on average only 1.4 (95% CI: 0.8-2.3) primary and 1.1 (95% CI: 0.6-2.0) secondary malaria vectors were collected per trap night with light traps indoors. Amitraz had no effect on survival of host-seeking An. arabiensis under experimental conditions but deltamethrin increased mosquito mortality (OR 19, 95% CI: 7-50), but only for 1 week. In the field, vector mortality in association with deltamethrin treatment was detected only with CBTs and only immediately after the treatment (OR 0.25, 95% CI: 0.13-0.52).
Conclusions: Entomological sampling with CBTs highlights that targeting cattle for mosquito control has potential since it would not only target naturally zoophilic malaria vectors but also opportunistic feeders that lack access to human hosts as is expected in residual malaria transmission settings. However, the deltamethrin formulation tested here although used widely to treat cattle for tsetse and tick control, is not suitable for the control of malaria vectors since it causes only moderate initial mortality and has little residual activity.
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فهرسة مساهمة: Keywords: Anopheles; Cattle-baited trap; Insecticide-treated cattle; Malaria; Vector control
المشرفين على المادة: 0 (Insecticides)
0 (Nitriles)
0 (Pyrethrins)
2JTS8R821G (decamethrin)
تواريخ الأحداث: Date Created: 20170111 Date Completed: 20171226 Latest Revision: 20220318
رمز التحديث: 20240628
مُعرف محوري في PubMed: PMC5223359
DOI: 10.1186/s13071-016-1957-8
PMID: 28069065
قاعدة البيانات: MEDLINE
الوصف
تدمد:1756-3305
DOI:10.1186/s13071-016-1957-8