Epidemiological Investigation of Toxoplasma gondii Infections in Commercial Sheep Flock in an Endemic Area for Ocular Toxoplasmosis in Southern Brazil
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Toxoplasma gondii is a widely distributed parasite and of great importance to human and animal health.
The objective of this study was to assess the prevalence of T. gondii antibodies and risk factors associated with the infection in sheep in the Northwest region of the State of Rio Grande do Sul, Brazil; this region has a very high rate of human ocular toxoplasmosis. Ovine sera were tested by the modified agglutination test (cut-off 1:25).
T. gondii antibodies were detected in 70.2% (224 of 319). According to the logistic regression, the most significant factors associated were age and cat access to food stock facility.
Preventive measures are discussed to reduce the risk of transmission of this zoonosis.
KeywordsToxoplasmosis Sheep Risk factors MAT
The authors would like to give special thanks to the all farmers and to Rogério Nadal, Veterinarian of Universidade de Passo Fundo, for their collaboration in this study. This work was supported by FAPERJ and CNPq.
- 1.Almería S, Cabezón O, Paniagua J, Cano-Terriza D, Jiménez-Ruiz S, Arenas Montes A, Dubey JP, García-Bocanegra I (2018) Toxoplasma gondii in sympatric domestic and wild ungulates in the Mediterranean ecosystem. Parasitol Res 117:665–671. https://doi.org/10.1007/s00436-017-5705-6 CrossRefPubMedGoogle Scholar
- 3.Arantes TEF, Silveira C, Holland GN, Muccioli C, Yu F, Jones JL, Goldhardt R, Lewis KG, Belfort R (2015) Ocular involvement following postnatally acquired Toxoplasma gondii infection in Southern Brazil: a 28-year experience. Am J Ophthalmol 159:1002–1012.e2. https://doi.org/10.1016/j.ajo.2015.02.015 CrossRefPubMedGoogle Scholar
- 5.CDC (2002) EpiInfo 7.1.5. Centers for Disease Control and Prevention. EpiInfo 7.1.5. https://wwwn.cdc.gov/epiinfo/html/downloads.htm Accessed 12 June 2016
- 6.Correia ÉLB, Feitosa TF, dos Santos FA, de Azevedo SS, Pena HFJ, Gennari SM, Mota RA, Alves CJ (2015) Prevalence and risk factors for Toxoplasma gondii in sheep in the State of Paraíba, Northeastern Brazil. Revista Brasileira de Parasitologia Veterinária 24:383–386. https://doi.org/10.1590/S1984-29612015043 CrossRefPubMedGoogle Scholar
- 7.Cosendey-Kezen Leite RIJ, de Oliveira FCR, Frazão-Teixeira E, Dubey JP, de Souza GN, Ferreira AMR, Lilenbaum W (2014) Occurrence and risk factors associated to Toxoplasma gondii infection in sheep from Rio de Janeiro, Brazil. Trop Anim Health Prod 46:1463–1466. https://doi.org/10.1007/s11250-014-0667-5 CrossRefGoogle Scholar
- 8.Dubey JP (2010) Toxoplasmosis of animals and humans second edition, 2nd edn. CRC Press, Boca RatonGoogle Scholar
- 10.Dubey JP, Sundar N, Hill D, Velmurugan GV, Bandini LA, Kwok OCH, Majumdar D, Su C (2008) High prevalence and abundant atypical genotypes of Toxoplasma gondii isolated from lambs destined for human consumption in the USA. Int J Parasitol 38:999–1006. https://doi.org/10.1016/j.ijpara.2007.11.012 CrossRefPubMedGoogle Scholar
- 12.Edwards JF, Dubey JP (2013) Toxoplasma gondii abortion storm in sheep on a Texas farm and isolation of mouse virulent atypical genotype T. gondii from an aborted lamb from a chronically infected ewe. Vet Parasitol 192:129–136. https://doi.org/10.1016/j.vetpar.2012.09.037 CrossRefPubMedGoogle Scholar
- 13.Glasner PD, Silveira C, Kruszon-Moran D, Martins MC, Burnier M, Silveira S, Camargo ME, Nussenblatt RB, Kaslow RA, Belfort R (1992) An unusually high prevalence of ocular toxoplasmosis in Southern Brazil. Am J Ophthalmol 114:136–144. https://doi.org/10.1016/S0002-9394(14)73976-5 CrossRefPubMedGoogle Scholar
- 14.Guimarães LA, Bezerra RA, Rocha DS, Albuquerque GR (2013) Prevalence and risk factors associated with anti-Toxoplasma gondii antibodies in sheep from Bahia state, Brazil. Revista Brasileira de Parasitologia Veterinária 22:220–224. https://doi.org/10.1590/S1984-29612013000200041 CrossRefPubMedGoogle Scholar
- 15.Halos L, Thébault A, Aubert D, Thomas M, Perret C, Geers R, Alliot A, Escotte-Binet S, Ajzenberg D, Dardé M-L, Durand B, Boireau P, Villena I (2010) An innovative survey underlining the significant level of contamination by Toxoplasma gondii of ovine meat consumed in France. Int J Parasitol 40:193–200. https://doi.org/10.1016/j.ijpara.2009.06.009 CrossRefPubMedGoogle Scholar
- 16.Hecker YP, Masson FM, Armendano JI, Cora J, Olivares CF, Gual I, Pardini L, Moore DP, Moré G, Cantón GJ (2018) Evaluation of frequency of antibodies against Toxoplasma gondii, Neospora caninum and Sarcocystis spp. and transmission routes in sheep from Humid Pampa, Argentina. Acta Parasitol 63:416–421. https://doi.org/10.1515/ap-2018-0048 CrossRefPubMedGoogle Scholar
- 18.IBGE (2014) Instituto Brasileiro de Geografia e Estatística, n.d. Efetivo do rebanho de ovinos em 2014. Accessed 12 June 2016Google Scholar
- 20.Lúcio ÉC, Pimentel JDL, Clemente SMDS, Sá LMN, Oliveira JMB, Albuquerque PPF, Mota RA, Pinheiro Junior JW (2017) Epidemiological analysis of Toxoplasma gondii infection in sheep in the state of Pernambuco, Brazil. Semina: Ciências Agrárias. 38:3059. https://doi.org/10.5433/1679-0359.2017v38n5p3059 CrossRefGoogle Scholar
- 21.Magalhães FJR, Ribeiro-Andrade M, de Alcântara AM, Pinheiro Júnior JW, de Sena MJ, Porto WJN, Vieira RFC, Mota RA (2016) Risk factors for Toxoplasma gondii infection in sheep and cattle from Fernando de Noronha Island, Brazil. Revista Brasileira de Parasitologia Veterinária 25:511–515. https://doi.org/10.1590/s1984-29612016051 CrossRefPubMedGoogle Scholar
- 23.Nunes ACBT, da Silva EMV, de Oliveira JA, Yamasaki EM, Kim PCP, de Almeida JC, Nunes KB, Mota RA (2015) Application of different techniques to detect Toxoplasma gondii in slaughtered sheep for human consumption. Revista Brasileira de Parasitologia Veterinária 24:416–421. https://doi.org/10.1590/S1984-29612015076 CrossRefPubMedGoogle Scholar
- 25.Rêgo WMF, Paula NRO, Vitor RWA, Silva RAB, Diniz BLM, Sousa MM, Coelho WAC, Porfirio KP, Pinheiro RR, Alves FSF, Cavalcante ACR, Cardoso JFS (2016) Risk factors for Toxoplasma gondii infection in goats and sheep raised in the State of Piauí in northeast Brazil. Small Rumin Res 141:17–23. https://doi.org/10.1016/j.smallrumres.2016.04.010 CrossRefGoogle Scholar