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International Journal of TROPICAL DISEASE & Health

International Journal of TROPICAL DISEASE & Health, ISSN: 2278-1005,Vol.: 2, Issue.: 4 (October-December)

 

Short Communication

 

Evaluation of Field Performance of Insecticide-Treated Mosquito Nets in North-Western Burkina Faso

 

 

Valérie R. Louis1, Athanase Badolo2, Tabea Schröer1, Wamdaogo M. Guelbeogo2, Justin Tiendrebéogo3, Albrecht Jahn1, Maurice Yé3, N’Falé Sagnon2 and Olaf Mueller1*

1Institute of Public Health, Ruprecht-Karls-University Heidelberg, Im Neuenheimer Feld 324, 69120 Heidelberg, Germany.
2Centre National de Recherche et de Formation sur le Paludisme (CNRFP), 1487 Avenue de l’Oubritenga, 01 BP 2208 Ouagadougou, Burkina Faso.
3Centre de Recherche en Santé de Nouna (CRSN), Nouna, BP 02, Burkina Faso.

 

Abstracts

 

Aims: The aim of the study was to evaluate the field performance of insecticide-treated mosquito nets (ITNs) in north-western Burkina Faso.
Study design: Cross-sectional survey.
Place and Duration: The study took place between September and November 2008 (end of rainy season) in rural north-western Burkina Faso.
Methodology: Standard WHO bioassays were performed on field-collected ITNs from three areas of different insecticide pressure: semi-urban Nouna town, three villages with cotton agriculture, and three villages without cotton agriculture. Data on age and washing frequency of ITNs was collected, and deltamethrin content was determind by HPLC.
Results: The mean age of field-collected ITNs was 2.1 years. The mosquito mortality rate (Anopheles gambiae sl.) after 24 hours was 4% for the negative controls, 90% for the positive controls, and 73% for field-used ITNs. Differences in mosquito mortality between sub-areas disappeared after controlling for confounding variables.
Conclusion: This study demonstrates that under real life conditions, deltamethrin still shows some level of effectiveness despite ongoing insecticide pressure. However, deltamethrin resistance has been observed in other parts of the country and thus close surveillance of ITN efficacy is needed. More frequent replacement of ITNs is also recommended.

 

Keywords :

ITN; LLIN; deltamethrin; synthetic pyrethroids; cotton culture; malaria control; Anopheles gambiae.

 

Full Article - PDF    Page 284-289    Article Metrics

 

DOI : 10.9734/IJTDH/2012/2110

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