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Coverage-dependent effect of insecticide-treated curtains for dengue control in Thailand.

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Vanlerberghe, Veerle, Trongtokit, Yuwadee, Jirarojwatana, Somchai, Jirarojwatana, Ravisara, Lenhart, Audrey, Apiwathnasorn, Chamnarn, McCall, Philip ORCID: https://orcid.org/0000-0002-0007-3985 and Van der Stuyft, Patrick (2013) 'Coverage-dependent effect of insecticide-treated curtains for dengue control in Thailand.'. American Journal of Tropical Medicine and Hygiene, Vol 89, Issue 1, pp. 93-98.

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Abstract

Evidence on the effectiveness of insecticide-treated curtains (ITCs) for reducing densities of Aedes mosquitoes, the principal vectors of dengue, is scarce. In Laem Chabang southeast of Bangkok, Thailand, the Breteau Index (BI) (number of positive containers/100 houses) was 45 in October 2006. In March 2007, we distributed long-lasting ITCs in 22 clusters (2,032 houses) and selected 66 control clusters (661 houses). Routine control activities continued in all clusters. Six months after distribution, the BI was 25.8 and 77.6 in intervention and control areas, respectively (P < 0.001). Eighteen months after distribution, the BI was 21.8 and 23.8, respectively (P = 0.28). The average number of ITCs/house at cluster level was associated with the BI (P < 0.01) after six months, when 70.5% of households still used ITCs, but not at 18 months, when ITC coverage had decreased to 33.2%. Deployment of ITCs can result in considerable reductions in Aedes infestation levels, but the effect is coverage dependent.

Item Type: Article
Subjects: QX Parasitology > Insects. Other Parasites > QX 510 Mosquitoes
QX Parasitology > Insects. Other Parasites > QX 525 Aedes
QX Parasitology > Insects. Other Parasites > QX 600 Insect control. Tick control
WA Public Health > Health Problems of Special Population Groups > WA 395 Health in developing countries
WC Communicable Diseases > Virus Diseases > Infectious Mononucleosis. Arbovirus Infections > WC 528 Dengue
WC Communicable Diseases > Tropical and Parasitic Diseases > WC 765 Prevention and control
Faculty: Department: Biological Sciences > Vector Biology Department
Digital Object Identifer (DOI): https://doi.org/10.4269/ajtmh.13-0015
Depositing User: Samantha Sheldrake
Date Deposited: 16 Jul 2013 11:20
Last Modified: 22 Nov 2018 10:47
URI: https://archive.lstmed.ac.uk/id/eprint/3446

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