Impact of untreated bednets on prevalence of Wuchereria bancrofti transmitted by Anopheles farauti in Papua New Guinea
Identifieur interne : 009699 ( Main/Exploration ); précédent : 009698; suivant : 009700Impact of untreated bednets on prevalence of Wuchereria bancrofti transmitted by Anopheles farauti in Papua New Guinea
Auteurs : M. J. Bockarie [Papouasie-Nouvelle-Guinée] ; L. Tavul ; W. Kastens ; E. Michael [Royaume-Uni] ; J. W. Kazura [États-Unis]Source :
- Medical and Veterinary Entomology [ 0269-283X ] ; 2002-03.
Descripteurs français
- KwdFr :
- Adulte, Animaux, Anopheles (parasitologie), Femelle, Filariose lymphatique (), Filariose lymphatique (transmission), Filariose lymphatique (épidémiologie), Humains, Literie et linges, Mâle, Paludisme (), Paludisme (transmission), Paludisme (épidémiologie), Papouasie - Nouvelle-Guinée (épidémiologie), Prévalence, Vecteurs insectes (parasitologie), Wuchereria bancrofti.
- MESH :
- parasitologie : Anopheles, Vecteurs insectes.
- épidémiologie : Filariose lymphatique, Paludisme, Papouasie - Nouvelle-Guinée.
- Adulte, Animaux, Femelle, Filariose lymphatique, Humains, Literie et linges, Mâle, Paludisme, Prévalence, Wuchereria bancrofti.
- Wicri :
- geographic : Papouasie-Nouvelle-Guinée.
English descriptors
- KwdEn :
- Adult, Animals, Anopheles (parasitology), Bedding and Linens, Elephantiasis, Filarial (epidemiology), Elephantiasis, Filarial (prevention & control), Elephantiasis, Filarial (transmission), Female, Humans, Insect Vectors (parasitology), Malaria (epidemiology), Malaria (prevention & control), Malaria (transmission), Male, Papua New Guinea (epidemiology), Prevalence, Wuchereria bancrofti.
- MESH :
- geographic , epidemiology : Papua New Guinea.
- epidemiology : Elephantiasis, Filarial, Malaria.
- parasitology : Anopheles, Insect Vectors.
- prevention & control : Elephantiasis, Filarial, Malaria.
- transmission : Elephantiasis, Filarial, Malaria.
- Adult, Animals, Bedding and Linens, Female, Humans, Male, Prevalence, Wuchereria bancrofti.
Abstract
Abstract Despite the growing evidence that insecticide‐treated mosquito nets reduce malaria morbidity and mortality in a variety of epidemiological conditions, their value against lymphatic filariasis infection and disease is yet to be established. The impact of untreated bednets on the prevalence of Wuchereria bancrofti (Cobbold) (Nematoda: Filarioidea) infection and disease was investigated on Bagabag island in Papua New Guinea, where both malaria and filariasis are transmitted by the same vector mosquitoes of the Anopheles punctulatus Dönitz group (Diptera: Culicidae). Community‐wide surveys were conducted recording demographic characteristics including bednet usage. Physical examinations for hydrocoele and lymphoedema were performed and blood samples assessed for filarial and malaria parasites. Mosquitoes were sampled using the all‐night landing catch method and individually dissected to determine W. bancrofti infection and infective rates. Bednet usage among residents was 61% and the mean age of users (25.6 years) was similar to non‐users (22.5 years). Anopheles farauti Laveran was the only species were found to contain filarial larvae: 2.7% infected (all stages), 0.5% infective (L3). The overall W. bancrofti microfilaraemia and antigenaemia rates were 28.5% and 53.1%, respectively. Bednet users had lower prevalence of W. bancrofti microfilaraemia, antigenaemia and hydrocoele rates than non‐users. In comparison, untreated bednets had no effect on the prevalence and intensity of Plasmodium falciparum and P. vivax infections. The impact of bednet usage on rates of microfilaraemia and antigenaemia remained significant even when confounding factors such as age, location and sex were taken into account, suggesting that untreated bednets protect against W. bancrofti infection.
Url:
DOI: 10.1046/j.0269-283x.2002.00352.x
Affiliations:
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The impact of untreated bednets on the prevalence of Wuchereria bancrofti (Cobbold) (Nematoda: Filarioidea) infection and disease was investigated on Bagabag island in Papua New Guinea, where both malaria and filariasis are transmitted by the same vector mosquitoes of the Anopheles punctulatus Dönitz group (Diptera: Culicidae). Community‐wide surveys were conducted recording demographic characteristics including bednet usage. Physical examinations for hydrocoele and lymphoedema were performed and blood samples assessed for filarial and malaria parasites. Mosquitoes were sampled using the all‐night landing catch method and individually dissected to determine W. bancrofti infection and infective rates. Bednet usage among residents was 61% and the mean age of users (25.6 years) was similar to non‐users (22.5 years). Anopheles farauti Laveran was the only species were found to contain filarial larvae: 2.7% infected (all stages), 0.5% infective (L3). The overall W. bancrofti microfilaraemia and antigenaemia rates were 28.5% and 53.1%, respectively. Bednet users had lower prevalence of W. bancrofti microfilaraemia, antigenaemia and hydrocoele rates than non‐users. In comparison, untreated bednets had no effect on the prevalence and intensity of Plasmodium falciparum and P. vivax infections. The impact of bednet usage on rates of microfilaraemia and antigenaemia remained significant even when confounding factors such as age, location and sex were taken into account, suggesting that untreated bednets protect against W. bancrofti infection.</div></front></TEI><affiliations><list><country><li>Papouasie-Nouvelle-Guinée</li><li>Royaume-Uni</li><li>États-Unis</li></country><region><li>Angleterre</li><li>Grand Londres</li></region><settlement><li>Londres</li></settlement></list><tree><noCountry><name sortKey="Kastens, W" sort="Kastens, W" uniqKey="Kastens W" first="W." last="Kastens">W. Kastens</name><name sortKey="Tavul, L" sort="Tavul, L" uniqKey="Tavul L" first="L." last="Tavul">L. Tavul</name></noCountry><country name="Papouasie-Nouvelle-Guinée"><noRegion><name sortKey="Bockarie, M J" sort="Bockarie, M J" uniqKey="Bockarie M" first="M. J." last="Bockarie">M. J. Bockarie</name></noRegion></country><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Michael, E" sort="Michael, E" uniqKey="Michael E" first="E." last="Michael">E. Michael</name></region></country><country name="États-Unis"><noRegion><name sortKey="Kazura, J W" sort="Kazura, J W" uniqKey="Kazura J" first="J. W." last="Kazura">J. W. Kazura</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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