Occurrence of Bovine Cysticercosis in Two Regions of the State of Tocantins-Brazil and the Importance of Pathogen Identification

Bovine cysticercosis, caused by <i>Taenia saginata</i> metacestodes, is the cause of significant economic losses to the meat production chain by condemnation and downgrading of infected carcasses. It is also a public health issue causing human taeniasis. This study evaluated the occurren...

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Main Authors: Benta Natânia Silva FIGUEIREDO, Ricardo Alencar LIBóRIO, Megumi SATO, Camila Figueira da SILVA, Ronaldo Alves PEREIRA-JUNIOR, Yuichi CHIGUSA, Satoru KAWAI, Marcello Otake SATO
Format: Article
Language:English
Published: MDPI AG 2019-05-01
Series:Pathogens
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Online Access:https://www.mdpi.com/2076-0817/8/2/66
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Summary:Bovine cysticercosis, caused by <i>Taenia saginata</i> metacestodes, is the cause of significant economic losses to the meat production chain by condemnation and downgrading of infected carcasses. It is also a public health issue causing human taeniasis. This study evaluated the occurrence of bovine cysticercosis at the meat inspection procedures in slaughterhouses of south and north regions of the Tocantins State in Brazil. Specimens identified as cysts of <i>T. saginata</i> were collected and analyzed by molecular (PCR) and histopathological techniques. The cysts were collected from March to December of 2010 in slaughterhouses located in the cities of Alvorada (South) and Aragua&#237;na (North). The frequency of cystic lesions during the study was 0.033% (53/164,091) with 69.81% of calcified lesions and 30.9% of live cysts at meat inspection. From 14 samples submitted to molecular analysis, 28.57% (4/14) were positive for <i>T. saginata</i>. The histopathological analysis of the non-<i>T. saginata</i> samples showed lesions suggestive of granuloma and hydatid disease. The results indicated that the identification of the etiological agent is difficult by macroscopic inspection, emphasizing the need to associate specific diagnostic methods at meat inspection in abattoirs. In addition, species-specific PCR would be an effective tool for diagnosis, monitoring, and identifying cysticercosis, assisting the conventional tests.
ISSN:2076-0817