Durability assessment results suggest a serviceable life of two, rather than three, years for the current long-lasting insecticidal (mosquito) net (LLIN) intervention in Benin

BMC Infectious Diseases

Martin Akogbeto³  Raymond Beach²  Frederic Oke-Agbo⁴  Roseric Azondekon¹  Virgile Gnanguenon³ 

[1] University of Massachusetts, Amherst, MA, USA;Centers for Disease Control and Prevention, Atlanta, GA, USA;Faculte des Sciences et Techniques de l’Université d’Abomey-Calavi, Abomey-Calavi, Benin;Centre de Recherche Entomologique de Cotonou (CREC), Cotonou, Benin

关键词: Durability;    LLIN intervention serviceable life;    Fabric integrity;    Survivorship;    Long-lasting Insecticidal Net (LLIN);   

Others  :  1134710
DOI  :  10.1186/1471-2334-14-69

 received in 2013-10-26, accepted in 2014-02-03,  发布年份 2014

【 摘 要 】

Background

LLIN distribution, every three years, is a key intervention of Benin’s malaria control strategy. However, data from the field indicate that LLIN lifespan appears to vary based on both intrinsic (to the LLIN) and extrinsic factors.

Methods

We monitored two indicators of LLIN durability, survivorship and integrity, to validate the three-year-serviceable-life assumption. Interviews with net owners were used to identify factors associated with loss of integrity.

Results

Observed survivorship, after 18 months, was significantly less (p<0.0001) than predicted, based on the assumption that nets last three years. Instead, it was closer to predicted survivorship based on a two-year LLIN serviceable life assumption (p=0.03). Furthermore, the integrity of nearly one third of ‘surviving’ nets was so degraded that they were in need of replacement. Five factors: washing frequency, proximity to water for washing, location of kitchen, type of cooking fuel, and low net maintenance were associated with loss of fabric integrity.

Conclusion

A two-year serviceable life for the current LLIN intervention in Benin would be a more realistic program assumption.

【 授权许可】

   
2014 Gnanguenon et al.; licensee BioMed Central Ltd.

【 图 表 】

Figure 1.

Figure 2.

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