Epidemiological survey of the taeniasis/cysticercosis complex in cattle farms in Viçosa County, Minas Gerais, Brazil

Santos, Tatiane O.; Pinto, P.S.A.; Iasbik, Adriana Felix; Silva, Letícia F.; Nieto, Emilio; Guimarães-Peixoto, Rafaella P.M.

doi:10.1590/s0100-736x2013000400006

Cited by 13 publications

(17 citation statements)

References 9 publications

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“…The ELISA and Immunoblot tests have been applied to determine the epidemiological profile of the TC complex (Santos et al 2013, Silva et al 2015. Records of the occurrence of the TC complex promote streamlined control measures and the use of questionnaires is an important tool for identifying risk factors (Souza et al 2013).…”

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Prevalence and risk factors for porcine cysticercosis in rural communities of eastern Minas Gerais, Brazil

et al. 2017

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ABSTRACT.-Acevedo-Nieto E.C., Pinto P.S.A., Silva L.F., Guimarães-Peixoto R.P.M., Santos T.O., Ducas C.T.S. & Bevilacqua P.D. 2017. Prevalence and risk factors for porcine cysticercosis in rural communities of eastern Minas Gerais, Brazil. Pesquisa Veterinária Brasileira 37(9):905-910. Setor de Medicina Veterinária Preventiva, Departamento de Veterinária, Universidade Federal de Viçosa, Avenida PH Rolfs s/n. Viçosa, Cysticercosis is caused by Taenia solium, a parasitic zoonosis that affects human and pigs raised free-range in developing countries. The epidemiology of the taeniosis cysticercosis complex in Brazil is poorly understood especially when it comes to field research. The aim of this study was to estimate the prevalence and identify the risk factors associated with porcine cysticercosis in rural communities located in the east of Minas Gerais (MG), Brazil. From 371 farms in the county of Tumiritinga/MG, 101 farms from 14 communities were randomly sampled. Blood samples from pigs were collected, and epidemiological questionnaires were carried out. The serum samples obtained were analyzed through immunodiagnosis techniques, including ELISA and Western Blot, both for the detection of antibodies. The data obtained by different surveys were analyzed using EpiInfo 3.5.1 software to determine seroprevalence and risk factors associated with cysticercosis. The prevalence of farms with porcine cysticercosis was 9.9% (10/101) and antibody-based seropositive was 5.3% (13/247). The results indicate that cysticercosis occurs in high level in the rural area never studied before. These results suggest the presence of tapeworm carriers contributing to the occurrence and maintenance of this zoonotic life cycle in the county. Regarding risk factors, the most significant determinants for porcine cysticercosis in the field were free-range pig management (OR: 17.4, p: 0.0001), the method of disposal of human faeces in the environmental (OR: 7.6; p 0.012), and the size of the farm. Porcine cysticercosis was diagnosed only in areas represented by Agrarian Reform Settlements. From the results, it is possible to recommend as a means of control and prevention the destination of human faeces in appropriate sanitary landfills and the production of pigs in an enclosed area. Additionally, improving education in the communities sampled will indirectly affect the spreading of this disease. The results draw attention to the largest studies of this zoonotic disease in human settlements from rural areas due to the lack of knowledge about the epidemiology of the taeniosis-cysticercosis complex. The results could serve as the basis to support public policies aimed at creating an effective program to control the taeniosis-cysticercosis complex in the studied area. Awareness of TC among medical doctors, veterinarians, meat animal family producers and the public should be developed through appropriate information and education.

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Prevalence and risk factors for porcine cysticercosis in rural communities of eastern Minas Gerais, Brazil

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“…As características da criação animal e das condições socioeconômicas nas propriedades amostradas indicaram a presença de fatores que favoreceram a transmissão da cisticercose bovina, mostrando que a prevalência encontrada na área em estudo também pode estar relacionada com esses fatores, como mostram outras pesquisas, que também identificaram a qualidade da água, o sistema de criação extensivo e semiextensivo, as baixas condições socioeconômicas da população e o tamanho da propriedade rural, entre os principais fatores, que podem contribuir para a transmissão dessa parasitose em criações animais (Asaava et al 2009, Acevedo-Nieto et al 2012, Calvo-Artavia et al 2013b, Calvo-Artavia et al 2013c, Santos et al 2013.…”

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“…Embora, esse fator não tenha apresentado significância estatística nos critérios analíticos adotados neste estudo, observou-se que apenas 29,4% dos bovinos criados nas propriedades eram destinados ao abate inspecionado. Um outro estudo, realizado em um município da zona da mata mineira, também verificou que as propriedades realizavam abate clandestino, mostrando ser uma característica comum nas propriedades rurais (Santos et al 2013). …”

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Perfil da transmissão e prevalência da cisticercose bovina em propriedades rurais do Triângulo Mineiro

et al. 2016

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Cysticercosis can affect cattle which develop the larvae Taenia saginata. Despite the importance of cysticercosis for public animal health and for the economy, the epidemiological reality of such zoonosis in Brazil is little known. In the southeastern region of the State of Minas Gerais most of the data are obtained from the official Sanitary InspectionServices in slaughterhouses, but little information based on field data from live animals. In order to assess the epidemiological situation of bovine cysticercosis in small and medium-sized rural properties of four municipalities, located in the region of Triângulo Mineiro, we searched the occurrence and the major risk factors associated with transmission of the disease in those properties. We conducted a cross-sectional epidemiological study involving 68 properties located in rural areas of the four municipalities, where there were collected 1002 bovine blood samples and applied an epidemiological questionnaire. The serological diagnosis of cysticercosis was conducted by sorting through indirect ELISA test, and the suspected cases were subjected to Immunoblot for confirmation. This study revealed the prevalence of 4.7% of bovine cysticercosis in rural properties of the municipalities sampled from July to August 2013. The factors which were statistically significant for the transmission of cysticercosis were the expertise of those responsible for the property (OR 5.81 IC 1,), the family income ) and the water quality of the property (OR 9.40 IC 1.97-9.59). Other factors observed were of lower significance. These results identified the main factors which interfere in the transmission of bovine cysticercosis, allowing to subsidize preventive measures and to control this important zoonotic disease in the region of Triângulo Mineiro.

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“…Mato Grosso do Sul State Correlation analysis of selected variables and prevalence in municipalities based on post-mortem data Pereira et al [23] Bovine meat for human consumption acquired in the city and farm Viçosa country, Minas Gerais Logistic regression of results from cattle serological analyses and questionnaire completed by humans in sampled farms Santos et al [43] Farm size greater than 301 hectares…”

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Systematic review and meta-analysis of bovine cysticercosis in Brazil: current knowledge and way forward

2020

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Background: Taenia saginata taeniosis/cysticercosis has been well studied in several countries. Brazil is one of the most important beef exporting countries and has one of the highest cattle population size in the world. In this country, bovine cysticercosis (BCC) remains the most frequent reported zoonosis detected during post-mortem inspection, resulting in costs for the beef sector and public health. We performed a systematic literature review regarding data about BCC epidemiology in Brazil and meta-analyses for its prevalence in different administrative regions and the distribution over time, and based on this discussed possible control strategies. Methods:A systematic review was conducted to obtain data about BCC in Brazil using the words "bovine cysticercosis" and "Brazil" to construct the search phrase. The inclusion criteria used to select articles were: (i) published from 2000 to 2018; (ii) full text available online in Portuguese or English; and (iii) contain information at least regarding one of the following aspects of BCC in Brazil: prevalence, incidence, spatial distribution, risk-factors, economic burden and measures for control. Results:A set of 42 articles was included, covering the prevalence of BCC in Brazil, ranging between 0.01-18.75%. Prevalence results of 40 articles were included in a meta-analysis per administrative region. The highest prevalence was found in the South (3.4%; 95% CI: 2.0-5.2%), followed by the Southeast (2.7%; 95% CI: 1.9-3.6%), Northeast (1.5%; 95% CI: 0.6-2.7%), Central-western (0.9%; 95% CI: 0.3-1.7%) and North (0.0%; 95% CI: 0.0-0.6%) region. In addition, a reduction in prevalence over time was observed in all the evaluated states except for Alagoas and Pará. Conclusions:Besides the large availability of data, a critical lack of information about BCC epidemiology remains in Brazil. Nevertheless, the available data on prevalence, high risk-areas and risk factors should contribute to a better understanding of transmission and the formulation of recommendations for control. A One Health approach will be required to reduce T. saginata taeniosis/cysticercosis prevalence and the consequent economic burden for the beef sector in Brazil, one of the most important beef exporters in the world.

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Epidemiological survey of the taeniasis/cysticercosis complex in cattle farms in Viçosa County, Minas Gerais, Brazil

Cited by 13 publications

References 9 publications

Prevalence and risk factors for porcine cysticercosis in rural communities of eastern Minas Gerais, Brazil

Prevalence and risk factors for porcine cysticercosis in rural communities of eastern Minas Gerais, Brazil

Perfil da transmissão e prevalência da cisticercose bovina em propriedades rurais do Triângulo Mineiro

Systematic review and meta-analysis of bovine cysticercosis in Brazil: current knowledge and way forward

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