Age structure of owned dogs under compulsory culling in a visceral leishmaniasis endemic area

The age structure of the dog population is essential for planning and evaluating control programs for zoonotic diseases. We analyzed data of an owned-dog census in order to characterize, for the first time, the structure of a dog population under compulsory culling in a visceral leishmaniasis endemi...

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Bibliographic Details
Authors: Danielly Vieira Bortoletto, Yuri Tani Utsunomiya, Silvia Helena Venturoli Perri, Fernando Ferreira, Cáris Maroni Nunes
Format: article
Status:Published version
Publication Date:2016
Country:Brasil
Institution:Fundação Oswaldo Cruz (FIOCRUZ)
Repository:Cadernos de Saúde Pública
Language:English
OAI Identifier:oai:ojs.teste-cadernos.ensp.fiocruz.br:article/6155
Online Access:https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/6155
Access Level:Open access
Keyword:Dogs
Age Distribution
Visceral Leishmaniasis
Zoonoses
Description
Summary:The age structure of the dog population is essential for planning and evaluating control programs for zoonotic diseases. We analyzed data of an owned-dog census in order to characterize, for the first time, the structure of a dog population under compulsory culling in a visceral leishmaniasis endemic area (Panorama, São Paulo State, Brazil) that recorded a dog-culling rate of 28% in the year of the study. Data on 1,329 households and 1,671 owned dogs revealed an owned dog:human ratio of 1:7. The mean age of dogs was estimated at 1.73 years; the age pyramid indicated high birth and mortality rates at the first year of age with an estimated cumulative mortality of 78% at the third year of age and expected life span of 2.75 years. In spite of the high mortality, a growth projection simulation suggested that the population has potential to grow in a logarithmic scale over the years. The estimated parameters can be further applied in models to maximize the impact and minimize financial inputs of visceral leishmaniasis control measures.