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Veterinary Parasitology 149(2007) 126–129 www.elsevier.com/locate/vetpar
Prevalence of anti-Toxoplasma gondii and anti-Neospora caninum antibodies in goats slaughtered in the public slaughterhouse ´ of Patos city, Paraıba State, Northeast region of Brazil
Eduardo B. Faria a, Solange M. Gennari b, Hilda F.J. Pena b, ´ Ana Celia R. Athayde a, Maria Luana C.R. Silva a, ´ Sergio S. Azevedo a,*
ˆ ´ ´Unidade Academica de Medicina Veterinaria, Centro de Saude e Tecnologia Rural, Universidade Federal de Campina Grande, ´ ´ Av. Universitaria, Bairro Santa Cecılia, CEP 58700-970, Caixa Postal 64, Patos, PB, Brazil b ´ ´ ´ Departamento de Medicina Veterinaria Preventiva e Saude Animal, Faculdade de Medicina Veterinaria e Zootecnia, ˜ ˜ Universidade de Sao Paulo, Av. Prof. Dr. Orlando Marques dePaiva, 87, CEP 05508-270, Sao Paulo, SP, Brazil Received 9 April 2007; received in revised form 24 May 2007; accepted 5 July 2007
Abstract The prevalence of anti-Toxoplasma gondii and anti-Neospora caninum antibodies was investigated in goats slaughtered in the ´ public slaughterhouse of Patos, State of Paraıba, Northeast region of Brazil, and possible associations between sex of the animals andantibody prevalence were veriﬁed. Three-hundred six blood samples from goats collected before slaughter by jugular venopuncture were used. For the serologic diagnosis of T. gondii and N. caninum, the indirect ﬂuorescent-antibody test (IFAT) with cut-off values 64 and 50, respectively, was carried out. The prevalence of anti-T. gondii antibodies was 24.5% [95% CI = 19.8–29.7%] with titers rangingfrom 64 to 4096, and anti-N. caninum antibodies was 3.3% (95% CI = 1.6–5.9%) with titers ranging from 50 to 400. There were no associations between sex of animals and prevalence of anti-T. gondii and anti-N. caninum antibodies. # 2007 Elsevier B.V. All rights reserved.
Keywords: Goats; Toxoplasma gondii; Neospora caninum; Seroprevalence; Patos city
1. Introduction Toxoplasma gondii and Neosporacaninum are two closely related protozoan parasites that are distributed worldwide. Both organisms can infect a wide range of animal species and have an indirect life cycle with carnivores as the deﬁnitive hosts.
* Corresponding author. Tel.: +55 83 9951 0999; fax: +55 83 3421 4659. E-mail address: email@example.com (S.S. Azevedo). 0304-4017/$ – see front matter # 2007 Elsevier B.V. Allrights reserved. doi:10.1016/j.vetpar.2007.07.009
In goats, T. gondii can cause abortion or neonatal mortalities (Dubey and Beattie, 1988). The organism is estimated to infect 4–77% of the human population (Tenter et al., 2000). Although not normally a signiﬁcant problem for healthy individuals, T. gondii infection can be life threatening for infants infected congenitally and pharmacologicallyimmunosuppressed patients (Chintana et al., 1998). However, its greatest impact is in late AIDS patients, where up to 25% of patients will develop toxoplasmic encephalitis (Lucas et al., 1993). In animals, T. gondii infection not only results in signiﬁcant reproductive and hence economic losses, but also has implications for public
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