Spatio-temporal analysis of American Tegumentary Leishmaniasis incidences in the Brazilian state of Amazonas: 2011 to 2022

Chagas, Érica Cristina da Silva; Ferreira, Francisco Augusto da Silva; Mwangi, Victor Irungu; Terrazas, Wagner Cosme Morhy; Becker, Jaidson Nandi; Simões, Rejane de Castro; Pacífico, Emily Marcele Soares Silva; Silva, Arineia Soares da; Marques, Cintia da Silva; Chagas, Eda Cristina da Silva; Machado, Myrna Barata; Figueira, Elder Augusto Guimarães; Castro, Daniel Barros de; Ramos, Tatyana Costa Amorim; Oliveira, Júlio Henrique de

doi:10.1016/j.actatropica.2024.107266

Acta Tropica

2024

DOI: 10.1016/j.actatropica.2024.107266

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Spatio-temporal analysis of American Tegumentary Leishmaniasis incidences in the Brazilian state of Amazonas: 2011 to 2022

Érica Cristina da Silva Chagas,

Francisco Augusto da Silva Ferreira,

Victor Irungu Mwangi

et al.

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Molecular and serological detection of Leishmania infantum (Trypanosomatida: Trypanosomatidae) in domestic dogs in Manaus city, Amazonas, Brazil

Nascimento de Campos,

Gennari,

da Silva

et al. 2024

Journal of Medical Entomology

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Leishmaniasis are zoonosis widely spread in Brazil, caused by the protozoan of the genus Leishmania, which includes several species. The disease manifests itself in the visceral or tegumentary form, and the main reservoir is the dogs. Manaus is the largest city in the Brazilian Amazon region, and despite the importance of the municipality, practically nothing is known about leishmaniosis in humans and animals. The objective of this study was to evaluate the occurrence and risk factors associated with the presence of Leishmania infantum in domiciliated dogs from Manaus. Molecular (polymerase chain reaction) and serological (immunofluorescent antibody test) methods were used as an indication of the circulation of the parasite. Blood samples for 154 domiciled dogs were obtained, and prevalence ratio and analysis of the variables were performed. Serum antibodies anti-Leishmania spp. were detected in 20.8% (95% CI: 14.4%–27.2%). Access to the street and zone of residence (P < 0.01) were associated with higher seropositivity. Molecular diagnosis for L. infantum detected positivity in 60 (39%) of the 154 (95% CI: 31.3%–46.7%) animals, and the variables street access, contact with dogs, and zone of residence were associated with higher frequencies of positivity (P < 0.05). Both serology and molecular diagnosis detected positive dogs in the municipality. This is the first description of the circulation of L. infantum infecting dogs in Manaus. As the municipality is classified as nonendemic, studies of isolation and characterization of the isolate must be done urgently.

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Molecular and serological detection of Leishmania infantum (Trypanosomatida: Trypanosomatidae) in domestic dogs in Manaus city, Amazonas, Brazil

Nascimento de Campos,

Gennari,

da Silva

et al. 2024

Journal of Medical Entomology

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Spatio-temporal analysis of American Tegumentary Leishmaniasis incidences in the Brazilian state of Amazonas: 2011 to 2022

Cited by 1 publication

References 25 publications

Molecular and serological detection of Leishmania infantum (Trypanosomatida: Trypanosomatidae) in domestic dogs in Manaus city, Amazonas, Brazil

Molecular and serological detection of Leishmania infantum (Trypanosomatida: Trypanosomatidae) in domestic dogs in Manaus city, Amazonas, Brazil

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