Occurrence of Neospora caninum and Toxoplasma gondii antibodies in dogs from rural properties surrounding a biological reserve, Espirito Santo, Brasil

Acosta, Igor da Cunha Lima; Centoducatte, Luana D’Avila; Soares, Herbert Sousa; Marcili, Arlei; Gondim, Maria Fernanda Naegeli; Rossi, João Luiz; Gennari, Solange Maria

doi:10.1590/s1984-29612016075

Cited by 14 publications

(11 citation statements)

References 16 publications

(16 reference statements)

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“…This percentage is considered high compared to that found in higher tham the present study. Acosta et al (2016) analyzed samples of 187 dogs from 30 properties in the state of Espirito Santo and found an occurrence of 11.76%, which is similar to the results of this study in the west of Paraná. Nogueira et al (2013) evaluated the prevalence of protozoa in dogs from urban and rural areas in the State of Minas Gerais and found that 11.4% of the samples had positive results: 13.78% in dogs from rural areas and 8.24% in dogs from urban areas.…”

Section: Seroprevalence and Risk Factorssupporting

confidence: 87%

“…Only two animals showed titers of 400 (10.52%) and one animal had a titer of 800 (5.26%). However, Nogueira et al (2013) found anti-N. caninum antibodies in dogs ranging from 50 to 6400, with a Acosta et al (2016) found a greater number of dogs with titers between 800 and 1600. The presence of N. caninum seropositive dogs was not considered a risk factor for seropositivity in cattle, as it was not statistically significant ( Figure 1).…”

Section: Seroprevalence and Risk Factorsmentioning

confidence: 99%

“…Samples with total fluorescence of tachyzoites from the 1:100 dilution for cattle and 1:50 for dogs were considered positive, while samples that only presented with apical reaction were considered negative (ACOSTA et al, 2016;CAMILLO et al, 2010). Positive sera were then diluted in ratio two series to the final titre.…”

Section: Analysis Of Samplesmentioning

confidence: 99%

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Neospora caninum in properties in the west region of Paraná, Brazil: prevalence and risk factors

Snak

Garcia

Lara

et al. 2018

Rev. Bras. Parasitol. Vet.

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Neospora caninum is a heteroxenous protozoa, whose definitive hosts are canids and intermediate hosts are herbivores, and is of great importance in cattle. The objectives of this study were to determine the prevalence of N. caninum in dairy cattle and dogs, to detect the presence of the protozoa at the molecular level in aborted fetuses, and to identify the risk factors associated with infection in properties in the western region of the state of Paraná. For this study, 600 bovine serum samples from 60 properties, 163 canine serum samples from 52 properties and 17 bovine fetuses from nine properties were collected. Data were collected using an epidemiological questionnaire to verify the risk factors. Serum samples were analyzed using the indirect fluorescent antibody test. Fetal tissues were analyzed using polymerase chain reaction and subsequent DNA sequencing. Of the bovine samples, 23.67% were positive for N. caninum. Among the canine samples, 11.66% were positive for N. caninum. Risk factors in cattle were history of abortion, low milk production, extensive breeding, and Jersey breed (p<0.05). Protozoan DNA was detected in 52.94% of the 17 fetuses and the sequencing presented high similarity with N. caninum.

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Section: Seroprevalence and Risk Factorssupporting

confidence: 87%

Section: Seroprevalence and Risk Factorsmentioning

confidence: 99%

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Neospora caninum in properties in the west region of Paraná, Brazil: prevalence and risk factors

Snak

Garcia

Lara

et al. 2018

Rev. Bras. Parasitol. Vet.

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“…The 9.18% prevalence of seropositive dogs found is similar to studies conducted in other Brazilian states on dogs from rural areas. Studies in the regions of Minas Gerais (NOGUEIRA et al, 2013), Espírito Santo (ACOSTA et al, 2016), andParaná (SNAK et al, 2018) showed N. caninum seropositivity in 13,78%, 11.76%, and 11.66% of the animals analyzed, respectively. On the other hand, few studies showed higher percentages, for example, Teixeira (2008) detected seropositivity in 62.37% of dogs in the milk producing properties of Maranhão, and Benetti et al (2009) reported positivity in 66.7% of the dogs inhabiting dairy farms in Mato Grosso.…”

Section: Discussionmentioning

confidence: 99%

Seroprevalence and risk factors for Neospora caninum infection in dogs of rural areas of the Brazilian Semi-arid Region

Silva

Oliveira

et al. 2020

AVB

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Article history Neospora caninum is a protozoan of the heteroxenous cycle, whose definitive hosts include domestic and wild canids, while intermediate hosts are herbivores. Its occurrence in dogs of rural areas deserves attention due to the risk of transmission to the animals of production, mainly cattle. The objective of this study was to determine the prevalence of N. caninum antibodies in dogs belonging to rural areas of the municipality of Sousa, the semi-arid region of Paraíba, Northeastern Brazil. Blood sera from dogs of six rural communities were analyzed. The indirect fluorescent antibody test was performed for the detection of anti-N. caninum IgG. The results were considered positive when the total peripheral fluorescence of the tachyzoites occurred at a dilution ≥1:50. The frequency of seropositivity was 9.18% (9/98 cases). Antibody titers ranged from to 200, with the 1:50 titer being predominant. Among the evaluated sites, 66.6% (4/6) showed the presence of at least one seropositive dog. The variable contact with cattle was considered a risk factor (odds ratio = 15.25) for infection by the parasite, demonstrating a higher risk of contact with contaminated tissues. It was concluded that dogs from rural areas of the municipality of Sousa were exposed to N. caninum, and it was suggested that contact between dogs and cattle be avoided as a control measure to prevent infection in dogs.

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“…Information about the epidemiology of neosporosis and toxoplasmosis has been reported in several places in Brazil, proving the widespread circulation of these protozoans (Acosta et al, 2016;Brasil et al, 2018;Cerqueira-Cézar et al, 2017;Langoni et al, 2014). The presence of anti-N. caninum antibodies has also been reported in different animals, including cattle and dogs, in the state of Mato Grosso (Benetti et al, 2008;Benetti et al, 2009;Boa Sorte et al, 2015;Melo et al, 2012;Rodrigues et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Prevalence of Neospora caninum and Toxoplasma gondii antibodies in dogs in the municipality of Poconé, state of Mato Grosso, Brazil

Melo¹,

Grangeiro²,

Aguiar³

2019

Braz. J. Vet. Res. Anim. Sci.

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Tis study evaluated the presence of Neospora caninum and Toxoplasma gondii antibodies in 320 domestic dogs living in urban and rural areas of the municipality of Poconé, located in the Pantanal wetlands of the state of Mato Grosso, Brazil. Anti-N. caninum (cut-of point 50) and anti-T. gondii (cut-of point 16) antibodies were detected by means of immunofuorescence assays (IFA), using NC-Bahia and RH strains as antigens, respectively. Anti-N. caninum antibodies were detected in 69 (21.56%; 95% CI: 17.27%-26.56%) dogs, 31 (44.93%) of which lived in urban areas and 38 (55.07%) in rural areas, and endpoint titers ranged from 50 to 3200. Anti-T. gondii antibodies were found in 132 (41.25%; 95% CI: 35.84%-46.87%) dogs, 58 (43.94%) from urban areas and 74 (56.06%) from rural areas, and endpoint titers ranged from 16 to 8192. A total of 33 dogs (10.3%) (12 urban and 21 rural animals) reacted to both agents (P <0.05). Tis study showed a higher prevalence of anti-T. gondii compared to anti-N. caninum antibodies in the dogs living in the Pantanal region, suggesting that both protozoans circulate in the studied region. Tis information is relevant, in view of its implications for animal and public health.

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Occurrence of Neospora caninum and Toxoplasma gondii antibodies in dogs from rural properties surrounding a biological reserve, Espirito Santo, Brasil

Cited by 14 publications

References 16 publications

Neospora caninum in properties in the west region of Paraná, Brazil: prevalence and risk factors

Neospora caninum in properties in the west region of Paraná, Brazil: prevalence and risk factors

Seroprevalence and risk factors for Neospora caninum infection in dogs of rural areas of the Brazilian Semi-arid Region

Prevalence of Neospora caninum and Toxoplasma gondii antibodies in dogs in the municipality of Poconé, state of Mato Grosso, Brazil

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