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The effectiveness of different window mesh sizes in the prevention of mosquitohuman contact

Abstract number: R2207

Idowu O.A., Adeleke M., Junaid Q.O., Funmilayo O.J.

Introduction: The use of Insecticide Treated Bednets (ITN) for prevention of mosquito borne diseases has not been fully embraced in Nigeria.

Objective:This study was carried out to assess the efficacy of the two different window mesh sizes as commonly used in Abeokuta, Nigeria. A high proportion of the human residence sampled in the preliminary a survey use only window nets as screen against mosquitoes.

Methods: Newly hatched mosquitoes were kept in specially designed experimental cages for 7 days using window nets of different mesh sizes as screen.

Results: The species of mosquitoes that hatched from larvae collected from different locations in Abeokuta were Culex quiquefasciatus, Aedes aegypti, Anopheles gambiae and Mansonia africanus with various anthropometric measurements ranging from head diameter of 0.25 mm-0.50 mm, thoracic width of 0.30 mm-1.05 mm, and abdominal width of 0.30 mm-0.60 mm. None of the mosquitoes was able to pass through any of the two mesh sizes assessed indicating their effectiveness as barrier against mosquitoes of different species. However, 70% of the window nets in the household survey were observed to record various degrees of perforations and damages through deliberate and/or indeliberate activities. Frequency of opening and closing of doors may also contribute additional entry route for mosquitoes.

Conclusions: This study emphasizes the fact that the use of window nets solely may not be sufficient for prevention of mosquito borne infections. There is the need to further encourage the use of ITN in Nigeria.

Session Details

Date: 16/05/2009
Time: 00:00-00:00
Session name: 19th European Congress of Clinical Microbiology and Infectious Diseases
Subject:
Location: Helsinki, Finland, 16 - 19 May 2009
Presentation type:
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