Serological, parasitological and molecular tests for canine visceral leishmaniosis diagnosis in a longitudinal study
Abstract One of the measures to control visceral leishmaniosis (VL) in Brazil is the identification and culling of the canine reservoir. There is much controversy concerning this strategy, including the proper identification of positive dogs and the fact that the host-parasite relationship changes o...
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Colégio Brasileiro de Parasitologia Veterinaria
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doaj-cd5febea06ef4e5fb4580bfe81821f0b2020-11-24T23:39:35ZengColégio Brasileiro de Parasitologia Veterinaria Revista Brasileira de Parasitologia Veterinária1984-296124440240910.1590/S1984-29612015073S1984-29612015000400402Serological, parasitological and molecular tests for canine visceral leishmaniosis diagnosis in a longitudinal studyCáris Maroni NunesValéria Marçal Félix de LimaGuilherme Dias de MeloHenrique Borges de PaulaMaria Esther Gonçalves PereiraCristiana de Melo Trinconi TroncoRoberto Mitsuyoshi HiramotoMarcia Dalastra LaurentiMarcelo Nascimento BurattiniAbstract One of the measures to control visceral leishmaniosis (VL) in Brazil is the identification and culling of the canine reservoir. There is much controversy concerning this strategy, including the proper identification of positive dogs and the fact that the host-parasite relationship changes over time make it more challenging. A dynamic cohort of 62 dogs was followed every three months using serological and parasitological examinations and PCR. Positivity by PCR was higher than by serology and by parasitological examinations and showed a tendency to decrease over time, while serology tended to increase after six months. Concomitant positivity in all tests was observed in 10.4% of the samples, and negativity in 29.1%. Overall sensitivity ranged from 43.6 to 64.1%, and was not uniform over time. The proportion of dogs with or without clinical signs was not different by cytology or PCR but PCR was able to identify a larger number of asymptomatic dogs compared to ELISA and immunochromatography. PCR can be useful for surveillance of areas where cases of canine VL have not yet been detected and in which control strategies can be implemented to limit the spread of the disease. Despite the advance in diagnostic tools CVL diagnosis remains a challenge.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612015000400402&lng=en&tlng=enCohort studiesdiagnosisLeishmania infantum chagasiparasitological evaluationPCRserology |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Cáris Maroni Nunes Valéria Marçal Félix de Lima Guilherme Dias de Melo Henrique Borges de Paula Maria Esther Gonçalves Pereira Cristiana de Melo Trinconi Tronco Roberto Mitsuyoshi Hiramoto Marcia Dalastra Laurenti Marcelo Nascimento Burattini |
spellingShingle |
Cáris Maroni Nunes Valéria Marçal Félix de Lima Guilherme Dias de Melo Henrique Borges de Paula Maria Esther Gonçalves Pereira Cristiana de Melo Trinconi Tronco Roberto Mitsuyoshi Hiramoto Marcia Dalastra Laurenti Marcelo Nascimento Burattini Serological, parasitological and molecular tests for canine visceral leishmaniosis diagnosis in a longitudinal study Revista Brasileira de Parasitologia Veterinária Cohort studies diagnosis Leishmania infantum chagasi parasitological evaluation PCR serology |
author_facet |
Cáris Maroni Nunes Valéria Marçal Félix de Lima Guilherme Dias de Melo Henrique Borges de Paula Maria Esther Gonçalves Pereira Cristiana de Melo Trinconi Tronco Roberto Mitsuyoshi Hiramoto Marcia Dalastra Laurenti Marcelo Nascimento Burattini |
author_sort |
Cáris Maroni Nunes |
title |
Serological, parasitological and molecular tests for canine visceral leishmaniosis diagnosis in a longitudinal study |
title_short |
Serological, parasitological and molecular tests for canine visceral leishmaniosis diagnosis in a longitudinal study |
title_full |
Serological, parasitological and molecular tests for canine visceral leishmaniosis diagnosis in a longitudinal study |
title_fullStr |
Serological, parasitological and molecular tests for canine visceral leishmaniosis diagnosis in a longitudinal study |
title_full_unstemmed |
Serological, parasitological and molecular tests for canine visceral leishmaniosis diagnosis in a longitudinal study |
title_sort |
serological, parasitological and molecular tests for canine visceral leishmaniosis diagnosis in a longitudinal study |
publisher |
Colégio Brasileiro de Parasitologia Veterinaria |
series |
Revista Brasileira de Parasitologia Veterinária |
issn |
1984-2961 |
description |
Abstract One of the measures to control visceral leishmaniosis (VL) in Brazil is the identification and culling of the canine reservoir. There is much controversy concerning this strategy, including the proper identification of positive dogs and the fact that the host-parasite relationship changes over time make it more challenging. A dynamic cohort of 62 dogs was followed every three months using serological and parasitological examinations and PCR. Positivity by PCR was higher than by serology and by parasitological examinations and showed a tendency to decrease over time, while serology tended to increase after six months. Concomitant positivity in all tests was observed in 10.4% of the samples, and negativity in 29.1%. Overall sensitivity ranged from 43.6 to 64.1%, and was not uniform over time. The proportion of dogs with or without clinical signs was not different by cytology or PCR but PCR was able to identify a larger number of asymptomatic dogs compared to ELISA and immunochromatography. PCR can be useful for surveillance of areas where cases of canine VL have not yet been detected and in which control strategies can be implemented to limit the spread of the disease. Despite the advance in diagnostic tools CVL diagnosis remains a challenge. |
topic |
Cohort studies diagnosis Leishmania infantum chagasi parasitological evaluation PCR serology |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612015000400402&lng=en&tlng=en |
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