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Canine Leishmaniasis: Pathological and Ecological Factors Influencing Transmission of Infection

P. Abranches, M. C. D. Silva-Pereira, F. M. Conceição-Silva, G. M. Santos-Gomes and J. G. Janz
The Journal of Parasitology
Vol. 77, No. 4 (Aug., 1991), pp. 557-561
DOI: 10.2307/3283159
Stable URL: http://www.jstor.org/stable/3283159
Page Count: 5
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Canine Leishmaniasis: Pathological and Ecological Factors Influencing Transmission of Infection
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Abstract

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.

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