Possibilidade da transmissão congênita de Toxoplasma gondii em ovinos através de seguimento sorológico no município de Rosário do Sul, RS, Brasil

Silva, Karin Lucianne Monti de Vasconcellos; Rue, Mario Luiz de la

doi:10.1590/s0103-84782006000300025

Cited by 14 publications

(6 citation statements)

References 7 publications

(8 reference statements)

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“…The seroprevalence of T. gondii in sheep was 21.74%. The rate of toxoplasmosis in our study is close to some studies Zia-Ali et al 2007, Silva et al (2006), Sabry et al (2008), respectively, who reported 20.9, 22, and 25.6% of T. gondii infection in sheep in Iran, Brazil, and Egypt. However, higher incidence rates 40.4, 41.7, 50, 51.5, 52.2, 67.7, 72.6, and 84.5% were recorded by Mainar-Jaime and Barbera'n, (2007) in Spain, Shaapan et al (2008) in Egypt, Mason et al (2010) in UK, Romanelli et al (2007) in Brazil, Sanad and Al-Ghabban (2007) in Saudi Arabia, Hove et al (2005) in Zimbabwe, Hamidinejat et al (2008) in Iran, and Klun et al (2006) in Serbia, respectively, but the lower values of 3.8, 4.3 and 11.2% detected by Sharma et al (2008) in India, Samra .…”

Section: Discussionsupporting

confidence: 90%

Toxoplasmosis in sheep from Kurdistan province, Iran

Khezri¹,

Mohammadian²,

Esmailnia³

2012

Afr. J. Microbiol. Res.

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Toxoplasmosis is one of the most threatening parasitic zoonoses in Iran. The causative agent, Toxoplasma gondii, uses a wide range of warm-blooded intermediate hosts in its life cycle, including sheep. This study was conducted on the seroprevalence of T. gondii infection in sheep from different regions of Kurdistan Province from December 2008 to September 2009. The main risk factors associated with the infection were analyzed. Sera was extracted from 368 sheep and examined for anti-T. gondii IgG antibodies by indirect ELISA test. According to results, the seropositive rates of sheep were 21.74%. Significant statistical differences were found between different geographical locations. For example central and southern provinces had the highest infection rates with 35.56% being infected, whilst western areas has the lowest infection rates with only 13.25%. Antibodies were detected in 20.87% of males and 22.13% of female sheep but no significant differences between sexes were found. Also, no significant differences between age groups were observed. The results indicated that the seroprevalence of T. gondii infection in sheep is relatively high.

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Section: Discussionsupporting

confidence: 90%

Toxoplasmosis in sheep from Kurdistan province, Iran

Khezri¹,

Mohammadian²,

Esmailnia³

2012

Afr. J. Microbiol. Res.

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“…There is no mention of finding intact T. gondii in aborted fetuses or their fetal membranes or search for other abortifacients. Silva and de la Rue (2006) also reported possible congenital transmission of T. gondii in lambs on a Rio Grande do Sul farm but did not report any abortion. There is need for a comprehensive study to determine the causes of abortion in sheep and goats in Brazil.…”

Section: Clinical Toxoplasmosis In Other Animalsmentioning

confidence: 98%

Toxoplasmosis in humans and animals in Brazil: high prevalence, high burden of disease, and epidemiology

et al. 2012

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SUMMARYInfections by the protozoan parasiteToxoplasma gondiiare widely prevalent in humans and animals in Brazil. The burden of clinical toxoplasmosis in humans is considered to be very high. The high prevalence and encouragement of the Brazilian Government provides a unique opportunity for international groups to study the epidemiology and control of toxoplasmosis in Brazil. Many early papers on toxoplasmosis in Brazil were published in Portuguese and often not available to scientists in English-speaking countries. In the present paper we review prevalence, clinical spectrum, molecular epidemiology, and control ofT. gondiiin humans and animals in Brazil. This knowledge should be useful to biologists, public health workers, veterinarians, and physicians. Brazil has a very high rate ofT. gondiiinfection in humans. Up to 50% of elementary school children and 50–80% of women of child-bearing age have antibodies toT. gondii. The risks for uninfected women to acquire toxoplasmosis during pregnancy and fetal transmission are high because the environment is highly contaminated with oocysts. The burden of toxoplasmosis in congenitally infected children is also very high. From limited data on screening of infants forT. gondiiIgM at birth, 5–23 children are born infected per 10 000 live births in Brazil. Based on an estimate of 1 infected child per 1000 births, 2649 children with congenital toxoplasmosis are likely to be born annually in Brazil. Most of these infected children are likely to develop symptoms or signs of clinical toxoplasmosis. Among the congenitally infected children whose clinical data are described in this review, several died soon after birth, 35% had neurological disease including hydrocephalus, microcephaly and mental retardation, 80% had ocular lesions, and in one report 40% of children had hearing loss. The severity of clinical toxoplasmosis in Brazilian children may be associated with the genetic characteristics ofT. gondiiisolates prevailing in animals and humans in Brazil.

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“…Some of the risk factors associated with infection include age, gender, water source, presence of cats, type of production system (MASALA et al, 2003;VESCO et al, 2007), capacity of grazing areas, genotypes of parasite and host, infection period, and duration of infection before pregnancy (SILVA; DE LA RUE, 2006).…”

Section: Introductionmentioning

confidence: 99%

Prevalence and risk factors associated to ovine toxoplasmosis in northeastern Brazil

Mendonça

Barros

Guimarães

et al. 2013

Rev. Bras. Parasitol. Vet.

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In this study, we aimed to determine the prevalence and risk factors associated to Toxoplasma gondii infection in sheep from northeastern Brazil. A total of 932 ovine serum samples from 54 properties in 19 municipalities of the state of Sergipe were collected and assayed using indirect fluorescent antibody test. The assay used antibodies against Toxoplasma gondii (IFAT-IgG) with a cutoff point of 1:64. We observed that 28.22% (263/932) of the ovine samples were serum-reactive. In a logistic regression, factors such as consumption of water directly from the source, consumption of water from a deep well, and age below 12 months were associated with protection; whereas factors such as presence of cats on the property, presence of slatted floor, and use of exchanged or borrowed breeding males were associated with infection. The studied area can be considered endemic for toxoplasmosis, so it is necessary to adopt preventive and control measures because this zoonotic infection poses risks to public health.Keywords: Toxoplasma gondii, sheep, seroepidemiology, risk factors, Brazil. ResumoObjetivou-se determinar a prevalência e os fatores associados à infecção por Toxoplasma gondii em ovinos do Nordeste brasileiro. Foram processadas 932 amostras de soro de ovinos procedentes de 54 propriedades de 19 municípios do Estado de Sergipe e analisadas pela reação de imunofluorescência indireta para pesquisa de anticorpos contra Toxoplasma gondii (RIFI-IgG), com ponto de corte de 1:64. Observou-se que 28,22% (263/932) dos ovinos foram sororeagentes. Na regressão logística não condicional, ingestão de água direto da fonte, ingestão de água de poço profundo e idade inferior a 12 meses foram fatores associados à proteção; enquanto que a presença de gato na propriedade, presença de aprisco ripado e troca ou empréstimo de machos reprodutores foram identificados como fatores associados à infecção. Ao considerar a região de estudo como endêmica para a doença, cabe a adoção de medidas preventivas e de controle, uma vez que por apresentar caráter zoonótico a infecção destes animais representa riscos à saúde pública.

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Possibilidade da transmissão congênita de Toxoplasma gondii em ovinos através de seguimento sorológico no município de Rosário do Sul, RS, Brasil

Cited by 14 publications

References 7 publications

Toxoplasmosis in sheep from Kurdistan province, Iran

Toxoplasmosis in sheep from Kurdistan province, Iran

Toxoplasmosis in humans and animals in Brazil: high prevalence, high burden of disease, and epidemiology

Prevalence and risk factors associated to ovine toxoplasmosis in northeastern Brazil

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