Do topical repellents divert mosquitoes within a community? Health equity implications of topical repellents as a mosquito bite prevention tool.

<h4>Objectives</h4>Repellents do not kill mosquitoes--they simply reduce human-vector contact. Thus it is possible that individuals who do not use repellents but dwell close to repellent users experience more bites than otherwise. The objective of this study was to measure if diversion o...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Marta Ferreira Maia, Sangoro Peter Onyango, Max Thele, Emmanuel Titus Simfukwe, Elizabeth Louise Turner, Sarah Jane Moore
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/817c17c350ca4c5c9632b3b51f38bbaa
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:817c17c350ca4c5c9632b3b51f38bbaa
record_format	dspace
spelling	oai:doaj.org-article:817c17c350ca4c5c9632b3b51f38bbaa2021-11-18T08:40:46ZDo topical repellents divert mosquitoes within a community? Health equity implications of topical repellents as a mosquito bite prevention tool.1932-620310.1371/journal.pone.0084875https://doaj.org/article/817c17c350ca4c5c9632b3b51f38bbaa2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24376852/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Objectives</h4>Repellents do not kill mosquitoes--they simply reduce human-vector contact. Thus it is possible that individuals who do not use repellents but dwell close to repellent users experience more bites than otherwise. The objective of this study was to measure if diversion occurs from households that use repellents to those that do not use repellents.<h4>Methods</h4>The study was performed in three Tanzanian villages using 15%-DEET and placebo lotions. All households were given LLINs. Three coverage scenarios were investigated: complete coverage (all households were given 15%-DEET), incomplete coverage (80% of households were given 15%-DEET and 20% placebo) and no coverage (all households were given placebo). A crossover study design was used and coverage scenarios were rotated weekly over a period of ten weeks. The placebo lotion was randomly allocated to households in the incomplete coverage scenario. The level of compliance was reported to be close to 100%. Mosquito densities were measured through aspiration of resting mosquitoes. Data were analysed using negative binomial regression models.<h4>Findings</h4>Repellent-users had consistently fewer mosquitoes in their dwellings. In villages where everybody had been given 15%-DEET, resting mosquito densities were fewer than half that of households in the no coverage scenario (Incidence Rate Ratio [IRR]=0.39 (95% confidence interval [CI]: 0.25-0.60); p<0.001). Placebo-users living in a village where 80% of the households used 15%-DEET were likely to have over four-times more mosquitoes (IRR=4.17; 95% CI: 3.08-5.65; p<0.001) resting in their dwellings in comparison to households in a village where nobody uses repellent.<h4>Conclusions</h4>There is evidence that high coverage of repellent use could significantly reduce man-vector contact but with incomplete coverage evidence suggests that mosquitoes are diverted from households that use repellent to those that do not. Therefore, if repellents are to be considered for vector control, strategies to maximise coverage are required.Marta Ferreira MaiaSangoro Peter OnyangoMax TheleEmmanuel Titus SimfukweElizabeth Louise TurnerSarah Jane MoorePublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 12, p e84875 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Marta Ferreira Maia Sangoro Peter Onyango Max Thele Emmanuel Titus Simfukwe Elizabeth Louise Turner Sarah Jane Moore Do topical repellents divert mosquitoes within a community? Health equity implications of topical repellents as a mosquito bite prevention tool.
description	<h4>Objectives</h4>Repellents do not kill mosquitoes--they simply reduce human-vector contact. Thus it is possible that individuals who do not use repellents but dwell close to repellent users experience more bites than otherwise. The objective of this study was to measure if diversion occurs from households that use repellents to those that do not use repellents.<h4>Methods</h4>The study was performed in three Tanzanian villages using 15%-DEET and placebo lotions. All households were given LLINs. Three coverage scenarios were investigated: complete coverage (all households were given 15%-DEET), incomplete coverage (80% of households were given 15%-DEET and 20% placebo) and no coverage (all households were given placebo). A crossover study design was used and coverage scenarios were rotated weekly over a period of ten weeks. The placebo lotion was randomly allocated to households in the incomplete coverage scenario. The level of compliance was reported to be close to 100%. Mosquito densities were measured through aspiration of resting mosquitoes. Data were analysed using negative binomial regression models.<h4>Findings</h4>Repellent-users had consistently fewer mosquitoes in their dwellings. In villages where everybody had been given 15%-DEET, resting mosquito densities were fewer than half that of households in the no coverage scenario (Incidence Rate Ratio [IRR]=0.39 (95% confidence interval [CI]: 0.25-0.60); p<0.001). Placebo-users living in a village where 80% of the households used 15%-DEET were likely to have over four-times more mosquitoes (IRR=4.17; 95% CI: 3.08-5.65; p<0.001) resting in their dwellings in comparison to households in a village where nobody uses repellent.<h4>Conclusions</h4>There is evidence that high coverage of repellent use could significantly reduce man-vector contact but with incomplete coverage evidence suggests that mosquitoes are diverted from households that use repellent to those that do not. Therefore, if repellents are to be considered for vector control, strategies to maximise coverage are required.
format	article
author	Marta Ferreira Maia Sangoro Peter Onyango Max Thele Emmanuel Titus Simfukwe Elizabeth Louise Turner Sarah Jane Moore
author_facet	Marta Ferreira Maia Sangoro Peter Onyango Max Thele Emmanuel Titus Simfukwe Elizabeth Louise Turner Sarah Jane Moore
author_sort	Marta Ferreira Maia
title	Do topical repellents divert mosquitoes within a community? Health equity implications of topical repellents as a mosquito bite prevention tool.
title_short	Do topical repellents divert mosquitoes within a community? Health equity implications of topical repellents as a mosquito bite prevention tool.
title_full	Do topical repellents divert mosquitoes within a community? Health equity implications of topical repellents as a mosquito bite prevention tool.
title_fullStr	Do topical repellents divert mosquitoes within a community? Health equity implications of topical repellents as a mosquito bite prevention tool.
title_full_unstemmed	Do topical repellents divert mosquitoes within a community? Health equity implications of topical repellents as a mosquito bite prevention tool.
title_sort	do topical repellents divert mosquitoes within a community? health equity implications of topical repellents as a mosquito bite prevention tool.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/817c17c350ca4c5c9632b3b51f38bbaa
work_keys_str_mv	AT martaferreiramaia dotopicalrepellentsdivertmosquitoeswithinacommunityhealthequityimplicationsoftopicalrepellentsasamosquitobitepreventiontool AT sangoropeteronyango dotopicalrepellentsdivertmosquitoeswithinacommunityhealthequityimplicationsoftopicalrepellentsasamosquitobitepreventiontool AT maxthele dotopicalrepellentsdivertmosquitoeswithinacommunityhealthequityimplicationsoftopicalrepellentsasamosquitobitepreventiontool AT emmanueltitussimfukwe dotopicalrepellentsdivertmosquitoeswithinacommunityhealthequityimplicationsoftopicalrepellentsasamosquitobitepreventiontool AT elizabethlouiseturner dotopicalrepellentsdivertmosquitoeswithinacommunityhealthequityimplicationsoftopicalrepellentsasamosquitobitepreventiontool AT sarahjanemoore dotopicalrepellentsdivertmosquitoeswithinacommunityhealthequityimplicationsoftopicalrepellentsasamosquitobitepreventiontool
_version_	1718421455234924544

Do topical repellents divert mosquitoes within a community? Health equity implications of topical repellents as a mosquito bite prevention tool.

Ejemplares similares