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ORIGINAL RESEARCH article

Front. Trop. Dis.
Sec. Emerging Tropical Diseases
Volume 5 - 2024 | doi: 10.3389/fitd.2024.1501710
This article is part of the Research Topic Foodborne Zoonotic Parasites and Parasitoses View all 4 articles

ABSENCE OF INFECTION BY Trichinella spp. (Nematoda: Trichinellidae) IN FREE-LIVING WILD CARNIVORES IN BRAZIL

Provisionally accepted
Livia de Oliveira Andrade Livia de Oliveira Andrade 1Patricia Parreira Perin Patricia Parreira Perin 1Carmen Andrea Arias-Pacheco Carmen Andrea Arias-Pacheco 1Camilla Amorim Camilla Amorim 1Fernanda Lefort Fernanda Lefort 1Fernanda Mara Aragão Macedo Pereira Fernanda Mara Aragão Macedo Pereira 2Lauro Leite Soares-Neto Lauro Leite Soares-Neto 2Antonio de Pádua Bordignon Fernandes Antonio de Pádua Bordignon Fernandes 3Wilson Junior Oliveira Wilson Junior Oliveira 1Ricardo Shoiti Ichikawa Ricardo Shoiti Ichikawa 1Andre Luiz Mota da Costa Andre Luiz Mota da Costa 2Paulo Henrique Pereira Ruffino Paulo Henrique Pereira Ruffino 3Karin Werther Karin Werther 1Estevam Guilherme Lux Hoppe Estevam Guilherme Lux Hoppe 1*
  • 1 São Paulo State University, São Paulo, Brazil
  • 2 Parque Zoológico Municipal de Bauru, Bauru, Brazil
  • 3 Environmental Research Institute, SAO PAULO, Brazil

The final, formatted version of the article will be published soon.

    Nematodes of the genus Trichinella are foodborne zoonotic pathogens that are widespread globally. These parasites have two epidemiological cycles, domestic and silvatic, with the latter having wild carnivores as the main reservoirs of the parasite. Trichinella spp. have been increasingly detected in wild carnivores in Argentina and Chile. Although the disease is absent in domestic animals in Brazil, there is serological evidence that the agent is circulating in wild boars in some areas. This study aimed to diagnose Trichinella spp. infection through artificial tissue digestion and histopathology of selected tissues (forearm muscles, diaphragm and tongue) of wild carnivores from São Paulo state, southeastern Brazil. Tissue samples from 53 wild carnivores (21 Canidae, 25 Felidae, 04 Mustelidae, 03 Procyonidae) were used, along with a retrospective study of the slide bank, considering samples from the period 2010 to 2021, totaling 89 free-living carnivores (42 Canidae, 42 Felidae, 03 Mustelidae, 02 Procyonidae). Either artificial digestion or histopathological analyses did not reveal any larvae suggestive of Trichinella spp., indicating that the nematode was not circulating within the target population. To date, there is no direct evidence of nematode circulation in wild carnivores in the study area.

    Keywords: wild animals, Zoonoses, Parasites, Neotropics, One Health

    Received: 25 Sep 2024; Accepted: 16 Dec 2024.

    Copyright: © 2024 Andrade, Perin, Arias-Pacheco, Amorim, Lefort, Pereira, Soares-Neto, Bordignon Fernandes, Oliveira, Ichikawa, da Costa, Ruffino, Werther and Lux Hoppe. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Estevam Guilherme Lux Hoppe, São Paulo State University, São Paulo, Brazil

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