Skip to main content
    • Aa
    • Aa

Epidemiology of canine leishmaniasis: a comparative serological study of dogs and foxes in Amazon Brazil

  • O. Courtenay (a1) (a2), D. W. Macdonald (a2), R. Lainson (a3), J. J. Shaw (a3) (a4) and C. Dyes (a1)...

The paper describes a longitudinal field study of canine leishmaniasis in sympatric domestic dog and crab-eating fox (Cerdocyon thous) populations. Dogs were studied in house-to-house surveys, and foxes were studied by live-trapping and radio-telemetry. Because serological tests (IFAT in this case) for leishmaniasis are often of uncertain sensitivity and specificity, we draw conclusions comparatively. Both cross-sectional (age–prevalence) and longitudinal analyses indicate that incidence in dogs was highest in the dry season. Seasonal changes in the age–prevalence relationship for dogs suggest that serological conversion and recovery rates decline with prior exposure to infection, where ‘recovery’ may be due to loss of a positive antibody titre or death from leishmaniasis. The mean incidence in dogs was higher in the rural than in the urban population and higher in hunting dogs than pet dogs. Cross-sectional and longitudinal analyses of fox serological data suggest that foxes remain positive for longer than dogs on average, either because detectable antibody is more persistent or because they experience a lower mortality rate due to leishmaniasis.

Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

C. P. Doncaster & D. W. Macdonald (1990). Drifting territoriality in the red fox Vulpes vulpes. Journal of Animal Ecology 60, 423–39.

C. Dye & B. G. Williams (1993). Malnutrition, age and the risk of parasitic disease: visceral leishmaniasis revisited. Proceedings of the Royal Society of London, B 254, 33–9.

R. Lainson , J. J. Shaw , F. T. Silveira & R. R. Braga (1987). American visceral leishmaniasis: on the origin of Leishmania (Leishmania) chagasi. Transactions of the Royal Society of Tropical Medicine and Hygiene 81, 517.

R. Lainson , C. Dye , J. J. Shaw , D. Macdonald , O. Courtenay , A. A. Souza & F. T. Silveira (1990). Amazonian visceral leishmaniasis: distribution of the vector Lutzomyia longipalpis (Lutz & Neiva) in relation to the fox Cerdocyon thous (L.) and the efficiency of this reservoir host as a source of infection. Memorias do Instituto Oswaldo Cruz 85, 135–7.

R. J. Quinnell & C. Dye (1994). Correlates of peridomestic abundance of Lutzomyia longipalpis (Diptera: Psychodidae) in Amazonian Brazil. Medical and Veterinary Entomology 8, in Press.

E. M. Riley , O. Olerup & M. Troye-Blomberg (1991). The immune recognition of malaria antigens. Parasitology Today 7, 511.

L. Ryan , F. T. Silveira , R. Lainson & J. J. Shaw (1984). Leishmania infections in Lutzomyia longipalpis and Lu. antunesi (Diptera: Psychodidae) on the island of Marajó, Parà State, Brazil. Transactions of the Royal Society of Tropical Medicine and Hygiene 78, 547–8.

F. T. Silveira , R. Lainson , J. J. Shaw & M. M. Povoa (1982). Leishmaniasis in Brazil. XVIII. Further evidence incriminating the fox Cerdocyon thous (L.) as a reservior of Amazonian visceral leishmaniasis. Transactions of the Royal Society of Tropical Medicine and Hygiene 76, 830–2.

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

  • ISSN: 0031-1820
  • EISSN: 1469-8161
  • URL: /core/journals/parasitology
Please enter your name
Please enter a valid email address
Who would you like to send this to? *



Full text views

Total number of HTML views: 0
Total number of PDF views: 1 *
Loading metrics...

Abstract views

Total abstract views: 97 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 26th May 2017. This data will be updated every 24 hours.