title: Seroprevalence of Toxoplasma gondii (Nicole & Manceaux, 1909) and retroviral status of client-owned pet cats (Felis catus, Linnaeus, 1758) in Rio de Janeiro, Brazil.
abstract: Cats, as definitive host, play an important role in the transmission of Toxoplasma gondii. This study aimed to establish the seroprevalence of anti-T. gondii immunoglobulins G and M, and determine the frequency of oocysts in the feces of the domestic cat population in Rio de Janeiro, Brazil. We also aimed to study the association between T. gondii infection and age, sex, breed, lifestyle, diet and retroviral infection. A total of 108 cats were included in the study and fecal samples of 54 of those cats were obtained. Only 5.6% of the cats were seropositive for anti-T. gondii immunoglobulins using the indirect hemagglutination test. None of the 54 cats presented oocysts in their fecal samples. Although not statistically significant, males, mixed-breed, free-roaming and cats aged two years and older were found to be more exposed. Age, lifestyle and the use of litter boxes were found to play an important role as risk factors. Anemia and retroviral infections were independent of T. gondii infection. No antibodies were detected in the majority of cats (94.4%), indicating that those cats had never been exposed to the parasite and, therefore, once infected, they could present the risk of shedding large numbers of oocysts into the environment.
authors.affiliation: Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, RJ, Brazil.
authors.forename: Bethânia Ferreira
authors.initials: BF
authors.lastname: Bastos
authors.affiliation: Instituto Biomédico, Universidade Federal Fluminense, Niterói, RJ, Brazil.
authors.forename: Beatriz
authors.initials: B
authors.lastname: Brener
authors.affiliation: Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, RJ, Brazil.
authors.forename: Liza
authors.initials: L
authors.lastname: Gershony
authors.affiliation: Universidade Castelo Branco, Penha, RJ, Brazil.
authors.forename: Liliane
authors.initials: L
authors.lastname: Willi
authors.affiliation: Fundação Oswaldo Cruz, Manguinhos, RJ, Brazil.
authors.forename: Norma
authors.initials: N
authors.lastname: Labarthe
authors.affiliation: Fundação Oswaldo Cruz, Manguinhos, RJ, Brazil.
authors.forename: Cássia
authors.initials: C
authors.lastname: Pereira
authors.affiliation: Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, RJ, Brazil.
authors.forename: Flavya
authors.initials: F
authors.lastname: Mendes-De-Almeida
mesh_terms: D000818:Animals; D000913:Antibodies, Protozoan / Q000097:blood; D001938:Brazil / Q000453:epidemiology; D002371:Cat Diseases / Q000175:diagnosis / Q000453:epidemiology*; D002415:Cats; D005243:Feces / Q000469:parasitology; D005260:Female; D007074:Immunoglobulin G / Q000097:blood; D007075:Immunoglobulin M / Q000097:blood; D008297:Male; D057805:Pets / Q000469:parasitology* / Q000821:virology*; D012307:Risk Factors; D016036:Seroepidemiologic Studies; D014122:Toxoplasma / Q000276:immunology* / Q000302:isolation & purification; D014124:Toxoplasmosis, Animal / Q000175:diagnosis / Q000453:epidemiology*
chemical_list: D000913:Antibodies, Protozoan; D007074:Immunoglobulin G; D007075:Immunoglobulin M