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Long-lasting insecticide-treated house screens and targeted treatment of productive breeding-sites for dengue vector control in Acapulco, Mexico

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Che-Mendoza, A., Guillermo-May, G., Herrera-Bojorquez, J., Barrera-Perez, M., Dzul-Manzanilla, F., Gutierrez-Castro, C., Arredondo-Jimenez, J. I., Sanchez-Tejeda, G., Vazquez-Prokopec, G., Ranson, Hilary ORCID: https://orcid.org/0000-0003-2332-8247, Lenhart, A., Sommerfeld, J., McCall, Philip ORCID: https://orcid.org/0000-0002-0007-3985, Kroeger, A. and Manrique-Saide, P. (2015) 'Long-lasting insecticide-treated house screens and targeted treatment of productive breeding-sites for dengue vector control in Acapulco, Mexico'. Transactions of the Royal Society of Tropical Medicine and Hygiene, Vol 109, Issue 2, pp. 106-115.

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Abstract

Background
Long-lasting insecticidal net screens (LLIS) fitted to domestic windows and doors in combination with targeted treatment (TT) of the most productive Aedes aegypti breeding sites were evaluated for their impact on dengue vector indices in a cluster-randomised trial in Mexico between 2011 and 2013.

Methods
Sequentially over 2 years, LLIS and TT were deployed in 10 treatment clusters (100 houses/cluster) and followed up over 24 months. Cross-sectional surveys quantified infestations of adult mosquitoes, immature stages at baseline (pre-intervention) and in four post-intervention samples at 6-monthly intervals. Identical surveys were carried out in 10 control clusters that received no treatment.

Results
LLIS clusters had significantly lower infestations compared to control clusters at 5 and 12 months after installation, as measured by adult (male and female) and pupal-based vector indices. After addition of TT to the intervention houses in intervention clusters, indices remained significantly lower in the treated clusters until 18 (immature and adult stage indices) and 24 months (adult indices only) post-intervention.

Conclusions
These safe, simple affordable vector control tools were well-accepted by study participants and are potentially suitable in many regions at risk from dengue worldwide.

Item Type: Article
Subjects: QX Parasitology > Insects. Other Parasites > QX 600 Insect control. Tick control
QX Parasitology > Insects. Other Parasites > QX 650 Insect vectors
WA Public Health > Preventive Medicine > WA 110 Prevention and control of communicable diseases. Transmission of infectious diseases
WA Public Health > Preventive Medicine > WA 240 Disinfection. Disinfestation. Pesticides (including diseases caused by)
WC Communicable Diseases > Virus Diseases > Infectious Mononucleosis. Arbovirus Infections > WC 528 Dengue
Faculty: Department: Biological Sciences > Vector Biology Department
Digital Object Identifer (DOI): https://doi.org/10.1093/trstmh/tru189
Depositing User: Carmel Bates
Date Deposited: 26 Jan 2015 11:19
Last Modified: 06 Feb 2018 13:08
URI: https://archive.lstmed.ac.uk/id/eprint/4794

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