Occurrence of hydatidosis and cysticercosis in cattle in southern Rio Grande do Sul, Brazil, from 2013 to 2016

Alberti, Taina dos Santos; Bruhn, F. R. P.; Lansini, Valmor; Raffi, Margarida Buss; Scheid, Haide Valeska; Zamboni, Rosimeri; Quevedo, Lucas de Souza; Sallis, Eliza Simone Viégas

doi:10.1590/1678-5150-pvb-5865

Cited by 4 publications

(5 citation statements)

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“…In general, a reduction in occurrence rates was observed over the years, which was more pronounced for cysticercosis than for hydatidosis. The results corroborate the findings of Alberti et al (2018), who reported a decreasing trend in the occurrence of cysticercosis and hydatidosis from 2013 to 2016 in five municipalities in the southern region of the state of Rio Grande do Sul, probably due to the strengthening of communication and health education.…”

Section: Discussionsupporting

confidence: 90%

“…Flooding of rivers or estuaries contaminated directly or indirectly by untreated sewage discharges indicates that contaminated water is among the main risk factors associated with disease transmission. Eggs can be transported by water over long distances, infecting animals that ingest it during the journey (Alberti et al 2018, Henckel et al 2020. Henckel et al (2020) reported that the regions with the highest risk of cysticercosis in the Rio Grande do Sul were Porto Alegre, Caxias do Sul, Santa Maria, Ijuí and Passo Fundo.…”

Section: Discussionmentioning

confidence: 99%

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Epidemiological analyses of cattle carcasses affected by cysticercosis and hydatidosis in the State of Rio Grande do Sul from 2014 to 2018

et al. 2022

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Bovine cysticercosis and hydatidosis are frequently identified by inspectors in slaughterhouses from the state of Rio Grande do Sul. Slaughterhouse records can provide valuable information for animal-related diseases and public health surveillance. Analyzing these data can aid set priorities to regions or properties that need more attention. Slaughter condemnation data is collected daily and stored in the Agricultural Defense System (SDA) database of the State Veterinary Services. However, it needs to be turned into useful information in bovine cysticercosis and hydatidosis surveillance programs. This study aimed to discuss how the analysis of condemnation data in the context of epidemiology can be useful for a surveillance system of bovine cysticercosis and hydatidosis. For this purpose, slaughter data of 5,137,870 cattle from 480,000 animal movement permits (GTA) from 97,891 farms from 2014 to 2018 were obtained from the Secretary of Agriculture, Livestock and Rural Development of the State of Rio Grande do Sul (SEAPDR-RS). Differences in the occurrence rates of bovine cysticercosis and hydatidosis among mesoregions over time were assessed through generalized linear models. Cysticercosis was identified in 65,379 (1.27%) carcasses and hydatidosis in 323,395 (6.29%). The occurrence rates of both diseases varied distinctly over time between the regions (p<0.01). Next, a process was developed to identify priority farms to target a surveillance program based on the prevalence. Period prevalence for cysticercosis and hydatidosis was obtained for each farm. The epidemiological indicator was calculated for each farm, dividing the number of affected carcasses by the number of bovines sent to slaughter during the period. The mean prevalence was obtained, and the exact binomial test was applied to identify farms presenting prevalence above the mean. It was observed that 2.48% and 6.17% of the farms had prevalence above the population mean prevalence of cysticercosis and hydatidosis, respectively. The Western mesoregion had the highest percentage of farms with prevalence above the average for cysticercosis (6.9%), followed by the Southwest mesoregion (6.0%). For hydatidosis, the percentage frequency of farms with prevalence above the average was markedly higher in the mesoregions Southeast (32.8%) and Southwest (29.5%). The results showed that analysis of slaughterhouse condemnation data of SDA is useful to identify situations in which the occurrence of the diseases is significantly higher than the average to apply additional measures or epidemiological investigations. This information may be useful in plans of epidemiological surveillance programs for controlling bovine cysticercosis and hydatidosis by the State’s Official Veterinary Services.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Epidemiological analyses of cattle carcasses affected by cysticercosis and hydatidosis in the State of Rio Grande do Sul from 2014 to 2018

et al. 2022

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“…A set of 42 peer-reviewed published articles containing prevalence values (Additional file 2: Table S2) [7,11, and one describing the incidence of BCC in areas in Brazil was found in literature [59]. From these articles, we identified two articles [11,26] describing BCC prevalence in several Brazilian states, covering a long period and including a large sample size.…”

Section: Resultsmentioning

confidence: 99%

“…There was only one study performed in Brazil which describes the incidence of BCC from 2013 to 2016 in five Brazilian municipalities located in the state of Rio Grande do Sul (RS): Arroio Grande (0.72%), Canguçu (0.58%), Capão do Leão (1.31%), Pelotas (1.06%) and São Lourenço (0.83%) [59]. Furthermore, a set of 42 articles was found containing prevalence values and other additional information such as the period, method, state, administrative region, number of examined animals and number of cases (Additional file 2: Table S2).…”

Section: Incidence Prevalence and Spatial Distribution In Brazilmentioning

confidence: 99%

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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“…The temporal statistical analyses were done by using the Gretl 1.9.12 statistical software (GNU Regression, Econometricand Time-series Library), and an analysis of the existence of the trend and seasonality components was performed by verifying the series and their respective correlograms. Once verified the existence of these components, the series were differentiated and subsequently statistically tested for detecting analysis of stationarity, through increased Dickey-Fuller tests (Dickey & Fuller 1979), considering a value of p<0.05 (Morettin & Toloi 2006, Alberti et al 2018. Once analysis of stationarity was observed in the differentiated series, the presence or absence of the trend and seasonality components in the monthly series considered was inferred.…”

Section: Methodsmentioning

confidence: 99%

Epidemiological analysis of bovine tuberculosis in the southern region of Rio Grande do Sul from 2000 to 2015

et al. 2020

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Bovine tuberculosis (BTB) is an infectious and zoonotic disease with socioeconomic importance, responsible for economic losses in livestock due to the decrease in animal productivity, mortality, bovine carcass condemnation and restriction on exportations. The objective of the present study was to evaluate the epidemiological aspects of this disease through a descriptive analysis and time series of cases of bovine tuberculosis diagnosed at the Laboratório Regional de Diagnóstico (LRD) of the Faculdade de Medicina Veterinária, Universidade Federal de Pelotas (UFPel) from 2000 to 2015. A survey was carried out in the LRD database of cases diagnosed as tuberculosis in cattle during this period. The incidence rate of BTB ([cases/population] x 100000) was calculated. Qualitative variables (sex, age, race, origin, type of material and presumptive diagnosis) were analyzed in a descriptive way, aiming to establish the profile of affected animals, characterize the municipalities in which the disease is originated and also fix the main referral organs for diagnosis. The time series analysis was performed using the Gretl statistical software 1.9.12 (GNU Regression, Econometric and Time-series Library). To verify the existence of the stationary distribution, the test of Dickey-Fuller was used, considering a value of p<0.05. During this period, 331 cases of BTB were diagnosed in the LRD. The present study identified that the predominant profile of the bovines affected by tuberculosis was female bovine aged more than two years old and crossbreed; the main organ sent for histopathological examination was lymph nodes. The microregion of Pelotas presented the highest incidence of the disease. There was also a tendency of a decrease in the incidence rate of this disease over the years, absence of seasonal influence in the occurrence of the disease and no cases of epidemics occurred from 2002 to 2015 in the area covered by the LRD-UFPel.

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Occurrence of hydatidosis and cysticercosis in cattle in southern Rio Grande do Sul, Brazil, from 2013 to 2016

Cited by 4 publications

References 7 publications

Epidemiological analyses of cattle carcasses affected by cysticercosis and hydatidosis in the State of Rio Grande do Sul from 2014 to 2018

Epidemiological analyses of cattle carcasses affected by cysticercosis and hydatidosis in the State of Rio Grande do Sul from 2014 to 2018

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

Epidemiological analysis of bovine tuberculosis in the southern region of Rio Grande do Sul from 2000 to 2015

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