Canine leishmaniasis: Pathological and ecological factors influencing transmission of infection

P Abranches, M. C D Silva-Pereira, F. M. Conceicao-Silva, G. M. Santos-Gomes, J. G. Janz

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Canine leishmaniasis was studied in 1,823 dogs from the Lisbon metropolitan region. The breeds most affected were doberman and German shepherd, independent of sex and use. Young adult (12.2%) and older dogs (14.7%) had higher prevalences of infection. Parasitological confirmation of serological diagnosis was higher in dogs with indirect fluorescent antibody test titer ≥1:512, indicating that parasitological patency is a late event. Exposure of Leishmania in lymph nodes is more efficient for parasitological confirmation (75.4% of cases). Frequent signs of disease were enlarged lymph nodes and onychogriphosis. However, 53.8% of the dogs with significant antibody titers (≥1:128) showed no symptom, suggesting that canine leishmaniasis has a prolonged asymptomatic period. This study confirmed the importance of the dog as the reservoir of visceral leishmaniasis.

Original languageEnglish
Pages (from-to)557-561
Number of pages5
JournalJournal Of Parasitology
Issue number4
Publication statusPublished - 1991



  • pathology
  • Portugal
  • animal experiment
  • animal tissue
  • article
  • controlled study
  • dog
  • leishmaniasis
  • nonhuman

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