Tatiane de Oliveira Santos

Distribuição e identificação das regiões de risco para a cisticercose bovina no estado do Paraná

Bovine cysticercosis is a problem of public and animal health highly spread in Brazil, which has negative repercussions in meat production in several states. This is one of the most common diseases occurring in the slaughterhouses under sanitary inspection, becoming a concern for cold stores and producers, because of the losses that it entails. Little is known about the distribution and evolution of the number of cases of bovine cysticercosis in the state of Parana. Given the above, this work aimed to perform a retrospective survey on the occurrence of bovine cysticercosis, diagnosed by post-mortem examination by the Federal Inspection Service of the State of Parana from 2004 to 2008; determine the distribution of cases in the state; identify the areas that most likely present cases of the disease, and analyze the economic loss of the state due to the condemnations for this parasitosis. It has been found a 2.23% prevalence of bovine cysticercosis in the state of Parana. During the period analyzed, there was a statistically significant reduction (p<0.05) of the prevalence of bovine cysticercosis in the state. In the years 2004-2008, 29,708,550 kg of beef were condemned for cysticercosis, leading to economic losses. The state of Parana is getting, through the deployment of the control program for the taeniasis-cysticercosis complex, a positive development since it got, during the analysis period, to reduce the prevalence of this parasite in cattle and, thus, reduce the economic losses.

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

Despite the importance of human taeniasis/bovine cysticercosis for public and animal health and the economy, its actual epidemiological status in Brazil is not well-studied. We sought to assess the epidemiological profile of this zoonosis in the rural area of Vicosa County, Minas Gerais, Brazil. The prevalence of bovine cysticercosis was 0.42%, whereas no case of human taeniasis was diagnosed. Factors favoring the persistence of zoonosis were identified. These included the supply of untreated water to animals, animals raised for slaughter without sanitary supervision, poor mechanization of raising techniques, and the use of untreated water for human consumption. Bovine meat for human consumption acquired in the city or from the farm itself was characterized as a risk factor for bovine cysticercosis (Odds Ratio (OR) =16.77; p<0.05). Nevertheless, the families on the investigated farms did apply several appropriate measures to control this disease, such as the virtual lack of open sewers and the consumption of well-cooked meat. The presence of bovine cysticercosis cases, and the factors favoring its persistence, point to the need for constant epidemiological and sanitary surveillance in this county.

Prevalência do complexo teníase-cisticercose na zona rural do município de Viçosa, Minas Gerais

Taeniasis occurs due to the presence of the adult form of Taenia sp. in human beings, and cysticercosis is caused by the presence of the larval stage of T. solium in pigs and humans. A transversal study was conducted aiming to determine the prevalence of porcine cysticercosis and Taeniasis in 176 farms located in rural areas of Vicosa-MG. Blood samples of 226 pigs, and feces samples of 266 humans were collected. An epidemiological survey has also been done. We found a prevalence of 0.4% of porcine cysticercosis and Taeniasis has not been found. The epidemiological data has shown that although most people consumed non-inspected pork, it used to be prepared well-done. Data showed that 88.1% of the pigs are reared in confinement in only 1.1% of the properties the sewer was disposed on the soil, and 99.4% used pipes for water distribution. It can be concluded that the prevalence of the Taeniasis-cysticercosis complex in rural areas of Vicosa (State of Minas Gerais) is lower than in other similar regions.

Relevant peptides of Taenia crassiceps for the diagnosis of bovine cysticercosis by immunoblot

Given the limited knowledge about the diagnosis of bovine cysticercosis by immunoblot, the aim of this study was to assess the applicability of this test, identifying key peptides with diagnostic value. Immunoblot assays were performed using total larval antigen of Taenia crassiceps and 60 sera of positive bovines for cysticercosis (30 naturally and 30 experimentally infected with T. saginata eggs), 30 sera of negative bovines for cysticercosis and 30 sera of bovines with other diseases (fascioliasis, hydatidosis and tuberculosis). The peptides of greater diagnostic importance, in descending order of accuracy (%), were as follows: 6-8kDa (90.8%), 129-143kDa (74.2%), 99-105kDa (71.7%) and 14-19kDa (71.1%). Cross-reactions, due to fascioliasis and hydatidosis, were observed in the four intervals of peptides highlighted. The results demonstrate that the total antigen of T. crassiceps has peptides with a high diagnostic potential; therefore, the immunoblot is useful in the diagnosis of bovine cysticercosis.

Prevalence of teniasis-cysticercosis complex in a rural area of Matias Barbosa-MG

The taeniosis-cysticercosis complex is an important disease to the public and animal health. The man plays an important role in the life cycle, because he is the unique definitive host. The adult forms of the Taenia solium or Taenia saginata holds in gut, and the larvae forms develops in the muscle of bovine and swine, respectively. The objective of this study was to determine the prevalence and risk factors of the taeniosis-cysticercosis complex transmission in rural area of Matias Barbosa – MG, Brazil. Catla and swine lood and human stool samples were collected from 74 farms. Cysticercosis were eniasis were diagnosis serological methods and the teniasis by direct microscopy. Moreover, a questionnaire was 1

Prevalence and transmission of intestinal parasitosis in human beings from Zona da Mata, Minas Gerais, Brazil

Intestinal parasites are closely related to basic sanitary conditions, socioeconomic status, level of education, age and hygiene habits of the population; it is a serious Brazilian public health problem. This study aims to identify the prevalence of intestinal parasites in two municipalities of Zona da Mata, State of Minas Gerais, Brazil. We analyzed the samples using spontaneous sedimentation technique. In Viçosa, collecting data from hygienic and sanitary characteristics was possible by applying a structured questionnaire. The diagnosis revealed 11.2 % intestinal parasites in urban areas and 27.7% in rural areas. In Muriaé, the prevalence of intestinal parasites was 13.85% in urban areas. The majority of parasites found in Viçosa were Ascaris lumbricoides, Ancylostoma duodenale, Entamoeba coli and E. histolytica. Furthermore, in Muriaé we found Strongyloides stercoralis, Ascaris lumbricoides, Ancylostoma sp, Taenia sp, Hymenolepis nana, Enterobius vermicularis, Giardia lamblia, Endolimax nana, Entamoeba coli and E. histolytica. These parasites may indicate principally instability in the socio-economic conditions, serving as an important warning for local public health. In both areas, enteroparasitosis is high and it is of great importance to initiate sanitary measures to reduce them.