Toxoplasmose em ovinos e caprinos: estudo soroepidemiológico em duas regiões do Estado de Pernambuco, Brasil

Abstract

Com o objetivo de comparar variáveis epidemiológicas na toxoplasmose em ovinos e caprinos, amostras de soro de animais de propriedades localizadas em duas regiões do Estado de Pernambuco, Brasil, foram testadas pela reação de imunofluorescência indireta (RIFI) para detecção de anticorpos anti-Toxoplasma gondii. Dos 173 soros ovinos testados, em 35,3% foram encontrados resultados positivos, enquanto 40,4% dos 213 soros caprinos foram positivos à RIFI. Em ovinos, associações significativas foram encontradas para sexo e raça, mas não para região, tipo de manejo ou falha reprodutiva. Os resultados da RIFI para os caprinos foram significativamente associados ao sexo, raça, região, tipo de manejo e de exploração, mas não com a ocorrência de falhas reprodutivas.

Occurrence and risk factors associated with infection by Toxoplasma gondii in goats in the State of Alagoas, Brazil

“…It is similar to that determined in the municipality of Goiânia (43.1%) 22 , in the microregion of Londrina (30.7%) 23 and in the States of Bahia (28.9%) 24 , Pernambuco (40.4%) 25 , Rio Grande do Norte (30.6%) 13 and Minas Gerais (45.8%) 7 . These results also diverge from other works conducted in São Paulo (14.5% 26 and 28.7% 14 ), Uberlândia (19%) 27 , Bahia (16.4%) 28 , Paraíba (24.5%) 29 and in Ceará (25.1%) 15 .…”

“…In East Alagoas, the climate is humid, coastal and tropical and the mean annual temperature of around 25°C, typical of the Atlantic Forest, is propitious for the maintenance of oocysts of T. gondii, in agreement with results reported for the State of Pernambuco 25 , Brazil, which has a climate similar to Alagoas. Most notable are comparisons between the Zona da Mata in Pernambuco and the East region of Alagoas, where higher indices of seropositivity were registered for both.…”

“…Though not statistically significant in the multivariate analysis, the higher prevalence observed in females (40.4%) corroborates some studies 7,10 , but is in disagreement with research in which the variable sex was a significant factor (OR = 2.91 11 and OR = 1.73 25 ) as a determinant of infection by T. gondii , .…”

Occurrences of anti-Toxoplasma gondii and anti-Neospora caninum antibodies in sheep from four districts of Tocantins state, Brazilian Legal Amazon Region

“…In contrast, two reports suggested no correlation between gender and the presence of anti-T. gondii antibodies (Romanelliet al 2007, Caballero-Ortega et al 2008. The lack of association between seropositivity for T. gondii and herds with abortion problems was also reported by Soares et al (2009) and Silva et al (2003) in Brazil. However, all of the six farms in which reproductive problems had been reported, there were sheep seropositive to anti-T. gondii antibodies, suggesting that T. gondii could be the causative agent of the sporadic abortion reported by some farmers.…”

Outbreak of caprine abortion by Toxoplasma gondii in Midwest Brazil

“…Seroprevalence rate of toxoplasmosis in northern and southern parts of Iran has been reported to be 55% and 22%, respectively (Assmar et al 1997). In Brazil, studies in flocks of small ruminants found prevalence rates of 21.4 to 92.4% of anti-T. gondii antibodies (Amaral et al 1978, Chiari et al 1987, Sella et al 1994, Gondim et al 1999, Silva et al 2003, Maciel & Araújo 2004, Motta et al 2008, Modolo et al 2008, Varaschin et al 2011. Despite the numerous publications on prevalence of antibodies against T. gondii in goats in different Brazilian regions there is only one report in Brazil reporting abortion by this parasite in goats, in the state of Rio Grande do Sul (Pescador et al 2007).…”