Blackflies in the ointment: O. volvulus vector biting can be significantly reduced by the skin-application of mineral oil during human landing catches.
BACKGROUND:Standard human landing catches (sHLCs) have historically been a key component of Onchocerca volvulus transmission monitoring, but expose health-workers to potentially hazardous vector bites. Novel human-bait-free trapping methods have been developed, but do not always work where they are...
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ftdoajarticles:oai:doaj.org/article:1efdd346f79d4261b1bcabae70451e69 2023-05-15T15:18:09+02:00 Blackflies in the ointment: O. volvulus vector biting can be significantly reduced by the skin-application of mineral oil during human landing catches. Túllio Romão Ribeiro da Silva James Lee Crainey Felipe Arley Costa Pessoa Yago Vinícius Serra Dos Santos Jordam William Pereira-Silva Lorena Ferreira de Oliveira Leles Ana Carolina Vicente Sérgio Luiz Bessa Luz 2019-04-01T00:00:00Z https://doi.org/10.1371/journal.pntd.0007234 https://doaj.org/article/1efdd346f79d4261b1bcabae70451e69 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC6459560?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0007234 https://doaj.org/article/1efdd346f79d4261b1bcabae70451e69 PLoS Neglected Tropical Diseases, Vol 13, Iss 4, p e0007234 (2019) Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 article 2019 ftdoajarticles https://doi.org/10.1371/journal.pntd.0007234 2022-12-30T23:10:30Z BACKGROUND:Standard human landing catches (sHLCs) have historically been a key component of Onchocerca volvulus transmission monitoring, but expose health-workers to potentially hazardous vector bites. Novel human-bait-free trapping methods have been developed, but do not always work where they are needed and may not generate O. volvulus surveillance data that is directly comparable with historic data. METHODOLOGY:Simuliid sHLCs and mineral-oil protected HLCs (mopHLCs) were performed in a rural village of Amazonas state, Brazil. A four-hour direct comparisons of sHLCs and mopHLCs was carried-out using six vector collectors, each of whom used one leg for a sHLC and one for a mopHLC. Two-person collection teams then exclusively performed either mopHLCs or sHLCs for a further set of 12 four-hour collections. Following the completion of all collections, simuliid-bite mark estimates were made from legs used exclusively in sHLCs and legs used exclusively in mopHLCs. PRINCIPAL FINDINGS:All of the 1669 captured simuliids were identified as the O. volvulus vector Simulium oyapockense. Overall, mopHLC simuliids captured per hour (S/H) rates were lower than those obtained with sHLC trapping (15.5 S/H versus 20 S/H). Direct comparisons of simuliid capture rates found that vector-collectors captured simuliids significantly more efficiently ([Formula: see text]: 20.5 S/H) with mopHLC trapping than with sHLC trapping ([Formula: see text]: 16.4 S/H): P-value = 0.002. MopHLCs performed in isolation were, however, observed to capture vectors less efficiently ([Formula: see text]: 13.4 S/H) than sHLCs performed under similar conditions ([Formula: see text]: 19.98 S/H). All six vector collectors had significantly higher simuliid capture per counted bite mark (SC/CBM) rates using mopHLCs than they were observe to have using sHLCs ([Formula: see text]: 21 SC/CBM versus [Formula: see text]: 1 SC/CBM; p-value = 0.03125). CONCLUSIONS:Vector collectors captured significantly more simuliids per counted bite mark with mopHLCs than with ... Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic PLOS Neglected Tropical Diseases 13 4 e0007234 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
spellingShingle |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 Túllio Romão Ribeiro da Silva James Lee Crainey Felipe Arley Costa Pessoa Yago Vinícius Serra Dos Santos Jordam William Pereira-Silva Lorena Ferreira de Oliveira Leles Ana Carolina Vicente Sérgio Luiz Bessa Luz Blackflies in the ointment: O. volvulus vector biting can be significantly reduced by the skin-application of mineral oil during human landing catches. |
topic_facet |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
description |
BACKGROUND:Standard human landing catches (sHLCs) have historically been a key component of Onchocerca volvulus transmission monitoring, but expose health-workers to potentially hazardous vector bites. Novel human-bait-free trapping methods have been developed, but do not always work where they are needed and may not generate O. volvulus surveillance data that is directly comparable with historic data. METHODOLOGY:Simuliid sHLCs and mineral-oil protected HLCs (mopHLCs) were performed in a rural village of Amazonas state, Brazil. A four-hour direct comparisons of sHLCs and mopHLCs was carried-out using six vector collectors, each of whom used one leg for a sHLC and one for a mopHLC. Two-person collection teams then exclusively performed either mopHLCs or sHLCs for a further set of 12 four-hour collections. Following the completion of all collections, simuliid-bite mark estimates were made from legs used exclusively in sHLCs and legs used exclusively in mopHLCs. PRINCIPAL FINDINGS:All of the 1669 captured simuliids were identified as the O. volvulus vector Simulium oyapockense. Overall, mopHLC simuliids captured per hour (S/H) rates were lower than those obtained with sHLC trapping (15.5 S/H versus 20 S/H). Direct comparisons of simuliid capture rates found that vector-collectors captured simuliids significantly more efficiently ([Formula: see text]: 20.5 S/H) with mopHLC trapping than with sHLC trapping ([Formula: see text]: 16.4 S/H): P-value = 0.002. MopHLCs performed in isolation were, however, observed to capture vectors less efficiently ([Formula: see text]: 13.4 S/H) than sHLCs performed under similar conditions ([Formula: see text]: 19.98 S/H). All six vector collectors had significantly higher simuliid capture per counted bite mark (SC/CBM) rates using mopHLCs than they were observe to have using sHLCs ([Formula: see text]: 21 SC/CBM versus [Formula: see text]: 1 SC/CBM; p-value = 0.03125). CONCLUSIONS:Vector collectors captured significantly more simuliids per counted bite mark with mopHLCs than with ... |
format |
Article in Journal/Newspaper |
author |
Túllio Romão Ribeiro da Silva James Lee Crainey Felipe Arley Costa Pessoa Yago Vinícius Serra Dos Santos Jordam William Pereira-Silva Lorena Ferreira de Oliveira Leles Ana Carolina Vicente Sérgio Luiz Bessa Luz |
author_facet |
Túllio Romão Ribeiro da Silva James Lee Crainey Felipe Arley Costa Pessoa Yago Vinícius Serra Dos Santos Jordam William Pereira-Silva Lorena Ferreira de Oliveira Leles Ana Carolina Vicente Sérgio Luiz Bessa Luz |
author_sort |
Túllio Romão Ribeiro da Silva |
title |
Blackflies in the ointment: O. volvulus vector biting can be significantly reduced by the skin-application of mineral oil during human landing catches. |
title_short |
Blackflies in the ointment: O. volvulus vector biting can be significantly reduced by the skin-application of mineral oil during human landing catches. |
title_full |
Blackflies in the ointment: O. volvulus vector biting can be significantly reduced by the skin-application of mineral oil during human landing catches. |
title_fullStr |
Blackflies in the ointment: O. volvulus vector biting can be significantly reduced by the skin-application of mineral oil during human landing catches. |
title_full_unstemmed |
Blackflies in the ointment: O. volvulus vector biting can be significantly reduced by the skin-application of mineral oil during human landing catches. |
title_sort |
blackflies in the ointment: o. volvulus vector biting can be significantly reduced by the skin-application of mineral oil during human landing catches. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2019 |
url |
https://doi.org/10.1371/journal.pntd.0007234 https://doaj.org/article/1efdd346f79d4261b1bcabae70451e69 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
PLoS Neglected Tropical Diseases, Vol 13, Iss 4, p e0007234 (2019) |
op_relation |
http://europepmc.org/articles/PMC6459560?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0007234 https://doaj.org/article/1efdd346f79d4261b1bcabae70451e69 |
op_doi |
https://doi.org/10.1371/journal.pntd.0007234 |
container_title |
PLOS Neglected Tropical Diseases |
container_volume |
13 |
container_issue |
4 |
container_start_page |
e0007234 |
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1766348380778266624 |