LymphedemaV1, Main, Exploration, bibRecord, 00D489

Threshold of transmission of Brugia malayi by Anopheles sinensis.

Identifieur interne : 00D489 ( Main/Exploration ); précédent : 00D488; suivant : 00D490

Threshold of transmission of Brugia malayi by Anopheles sinensis.

Auteurs : S Q Zhang [République populaire de Chine] ; Q J Zhang ; F. Cheng ; L L Wang ; G P Pen

Source :

The Journal of tropical medicine and hygiene [ 0022-5304 ] ; 1991.

RBID : pubmed:1880826

Descripteurs français

KwdFr :
- Animaux, Anopheles (parasitologie), Brugia (croissance et développement), Chine, Filariose lymphatique (), Filariose lymphatique (parasitologie), Filariose lymphatique (transmission), Humains, Larve (croissance et développement), Population rurale, Vecteurs insectes.
MESH :
- croissance et développement : Brugia, Larve.
- parasitologie : Anopheles, Filariose lymphatique.
- Animaux, Chine, Filariose lymphatique, Humains, Population rurale, Vecteurs insectes.
Wicri :
- geographic : République populaire de Chine.

English descriptors

KwdEn :
- Animals, Anopheles (parasitology), Brugia (growth & development), China, Elephantiasis, Filarial (parasitology), Elephantiasis, Filarial (prevention & control), Elephantiasis, Filarial (transmission), Humans, Insect Vectors, Larva (growth & development), Rural Population.
MESH :
- geographic : China.
- growth & development : Brugia, Larva.
- parasitology : Anopheles, Elephantiasis, Filarial.
- prevention & control : Elephantiasis, Filarial.
- transmission : Elephantiasis, Filarial.
- Animals, Humans, Insect Vectors, Rural Population.

Abstract

In an area of central China where Brugia malayi is transmitted by Anopheles sinensis, three villages were followed for 4 years without any control measures. Diethylcarbamazine (DEC) had been used in a control programme reducing the parasite rate in Shuiwa from 12.72 to 0.59%, in Gubomen from 3.18 to 1.55% and in Moshi from 5.62 to 2.81% (although this fell the following year to 2.23%) up until the start of the trial. The village populations, the human biting rate, the parous and the gonotrophic cycle were comparable for all the areas, yet the microfilariae rate dropped to 0.18% in Shuiwa, 0.31% in Gubomen, but not in Moshi where it increased from 2.23 to 2.43%. This indicated that Shuiwa and Gubomen were below the threshold of transmission. Due to the small number of positive cases remaining, the density measurements showed less change, but a separate study on 44 individuals followed for 6 years revealed that those above 13 microfilariae per 60 mm3 remained unchanged or increased, while those below progressively decreased their densities. The threshold of transmission of B. malayi by An. sinensis was considered to be between 1.55 and 2.23% of the population, providing no individual had a higher density than 12 microfilariae per 60 mm3.

PubMed: 1880826

Affiliations:

République populaire de Chine

Le document en format XML

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<front><div type="abstract" xml:lang="en">In an area of central China where Brugia malayi is transmitted by Anopheles sinensis, three villages were followed for 4 years without any control measures. Diethylcarbamazine (DEC) had been used in a control programme reducing the parasite rate in Shuiwa from 12.72 to 0.59%, in Gubomen from 3.18 to 1.55% and in Moshi from 5.62 to 2.81% (although this fell the following year to 2.23%) up until the start of the trial. The village populations, the human biting rate, the parous and the gonotrophic cycle were comparable for all the areas, yet the microfilariae rate dropped to 0.18% in Shuiwa, 0.31% in Gubomen, but not in Moshi where it increased from 2.23 to 2.43%. This indicated that Shuiwa and Gubomen were below the threshold of transmission. Due to the small number of positive cases remaining, the density measurements showed less change, but a separate study on 44 individuals followed for 6 years revealed that those above 13 microfilariae per 60 mm3 remained unchanged or increased, while those below progressively decreased their densities. The threshold of transmission of B. malayi by An. sinensis was considered to be between 1.55 and 2.23% of the population, providing no individual had a higher density than 12 microfilariae per 60 mm3.</div>
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Serveur d'exploration sur le lymphœdème

Threshold of transmission of Brugia malayi by Anopheles sinensis.

Threshold of transmission of Brugia malayi by Anopheles sinensis.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki

	Serveur d'exploration sur le lymphœdème
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