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Vectorial efficacy of Phlebotomus argentipes in Kala-azar endemic foci of Bihar (India) under natural and artificial conditions.
Article Dans Anglais | IMSEAR | ID: sea-112719
ABSTRACT
Ability of Phlebotomus argentipes to acquire Leishmania donovani the causative agent of Indian Kala-azar was evaluated in the laboratory. Flies were fed artificially on infected blood suspensions, using a chick-skin-membrane feeding apparatus, and naturally on Leishmania donovani infected mice. In addition flies collected from different endemic areas were dissected and examined for natural infection. Flies fed on infected mice showed significantly higher feeding rate (14.4%, p < 0.01) compared to that of other experiments (9%, 8.75%) but the percentage of infection was very low (2.43%). No Chi-square comparison was made between infection rate and feeding rate because of low value in infection rate (less than 5). Flies dissected for natural infection showed only 0.1% infection. Not much difference was observed in the intensity of Leishmania donovani infection in the mid gut of sandflies examined from any of these experiments. These observations have confirmed that Phlebotomus argentipes has ability to acquire infection and it provides the final piece of evidence that Phlebotomus argentipes is the vector of Leishmania donovani in Bihar State.
Sujets)
Texte intégral: Disponible Indice: IMSEAR (Asie du Sud-Est) Sujet Principal: Phlebotomus / Leishmania donovani / Femelle / Humains / Cellules cultivées / Vecteurs de maladies / Inde / Leishmaniose viscérale / Animaux / Souris Pays comme sujet: Asie langue: Anglais Année: 2001 Type: Article

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Texte intégral: Disponible Indice: IMSEAR (Asie du Sud-Est) Sujet Principal: Phlebotomus / Leishmania donovani / Femelle / Humains / Cellules cultivées / Vecteurs de maladies / Inde / Leishmaniose viscérale / Animaux / Souris Pays comme sujet: Asie langue: Anglais Année: 2001 Type: Article