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Target product profiles for protecting against outdoor malaria transmission

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Killeen, Gerry and Moore, Sarah J (2012) 'Target product profiles for protecting against outdoor malaria transmission'. Malaria Journal, Vol 11, p. 17.

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Abstract

Abstract
Background
Long-lasting insecticidal nets (LLINs) and indoor residual sprays (IRS) have decimated malaria transmission by killing indoor-feeding mosquitoes. However, complete elimination
of malaria transmission with these proven methods is confounded by vectors that evade pesticide contact by feeding outdoors.

Methods
For any assumed level of indoor coverage and personal protective efficacy with insecticidal products, process-explicit malaria transmission models suggest that insecticides that repel mosquitoes will achieve less impact upon transmission than those that kill them outright.
Here such models are extended to explore how outdoor use of products containing either contact toxins or spatial repellents might augment or attenuate impact of high indoor
coverage of LLINs relying primarily upon contact toxicity.

Results
LLIN impact could be dramatically enhanced by high coverage with spatial repellents conferring near-complete personal protection, but only if combined indoor use of both
measures can be avoided where vectors persist that prefer feeding indoors upon humans. While very high levels of coverage and efficacy will be required for spatial repellents to substantially augment the impact of LLINs or IRS, these ambitious targets may well be at least as practically achievable as the lower requirements for equivalent impact using contact insecticides.

Conclusions
Vapour-phase repellents may be more acceptable, practical and effective than contact insecticides for preventing outdoor malaria transmission because they need not be applied to skin or clothing and may protect multiple occupants of spaces outside of treatable structures such as nets or houses.

Item Type: Article
Uncontrolled Keywords: integrated vector management pesticide Anopheles Plasmodium transmission dynamics
Subjects: QX Parasitology > Protozoa > QX 135 Plasmodia
QX Parasitology > Insects. Other Parasites > QX 515 Anopheles
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 > Tropical and Parasitic Diseases > WC 750 Malaria
Faculty: Department: Groups (2002 - 2012) > Vector Group
Digital Object Identifer (DOI): https://doi.org/10.1186/1475-2875-11-17
Depositing User: Users 183 not found.
Date Deposited: 31 Jul 2012 12:52
Last Modified: 06 Feb 2018 13:04
URI: https://archive.lstmed.ac.uk/id/eprint/2482

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