High Trypanosoma vivax infection rates in water buffalo and cattle in the Brazilian Lower Amazon

Perez, Herakles Antonio Garcia; Rodrigues, Carla Monadeli Filgueira; Pivat, Isis Helga Vivas; Fuzato, Adriana Carlos Rodrigues; Camargo, Erney P.; Minervino, Antônio Humberto Hamad; Teixeira, Marta Maria Geraldes

doi:10.1016/j.parint.2020.102162

Cited by 7 publications

(3 citation statements)

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“…moments (Cortez et al, 2009;Bastos et al, 2020), being, therefore, capable of detecting positive animals that are in the chronic phase of the disease. The association of parasitological and molecular techniques is effective in increasing the sensitivity for diagnosing the disease and decreasing false negatives in some studies, in which high rates of trypanosome infection were detected by molecular testing even in clinically healthy individuals who obtained results negative during parasitological tests, that is, with no detectable parasitemia (Pimentel et al, 2012;Garcia Pérez et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

Evaluation of techniques for diagnosis of Trypanosoma vivax infections in naturally infected cattle in the Zona da Mata Mineira

Alcindo

Vieira

Rocha

et al. 2022

Rev. Bras. Parasitol. Vet.

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This study aimed to evaluate diagnostic techniques for trypanosomiasis, caused by Trypanosoma vivax, in naturally infected cattle in Minas Gerais, Zona da Mata. The deaths of six lactating cows with similar clinical conditions—characterized by hyporexia, hypogalactia, and recumbency—had been reported from one property. Initially, two animals were examined and diagnosed with trypanosomiasis through identification of the protozoan in a blood smear. After the initial diagnosis, all lactating cows (n=37) on the property were examined, and blood samples were collected for tests including whole blood smear, buffy coat smear, Woo's technique, enzyme-linked immunosorbent assay (ELISA), and polymerase chain reaction (PCR). Woo's test, buffy coat smears, and whole blood smears indicated that 4/37 (10.81%) animals were positive for trypanosomiasis, whereas ELISA and PCR indicated that 33/37 (89.19%) and 27/37 (72.97%) animals, respectively, were positive. The agreement obtained between parasitological techniques was classified as high, while between ELISA and PCR, no agreement. In conclusion, parasitological techniques have a low capacity to identify infected animals in the chronic stage of T. vivax infection. Therefore, techniques such as PCR and/or ELISA should be used to minimize the occurrence of false negatives.

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Section: Resultsmentioning

confidence: 99%

Evaluation of techniques for diagnosis of Trypanosoma vivax infections in naturally infected cattle in the Zona da Mata Mineira

Alcindo

Vieira

Rocha

et al. 2022

Rev. Bras. Parasitol. Vet.

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“…Trypanosoma vivax has triggered outbreaks in various regions, marked by severe hematological and occasional neurological disorders that have led to high mortality rates. Animals that manage to recover from the acute illness often develop chronic infections [59][60][61][62].…”

Section: Trypanosoma Vivaxmentioning

confidence: 99%

Epidemiology of Animal Trypanosomiasis

Kapo,

Goletić,

Škapur

et al. 2023

Infectious Diseases

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Trypanosomiasis, alternatively known as trypanosomosis, is the name of several diseases in vertebrates, induced by parasitic protozoans belonging to the Trypanosoma genus. The best-studied species is Trypanosoma brucei with two subspecies: Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense, which cause Human African trypanosomiasis (HAT), also known as sleeping sickness. Moreover, African animal trypanosomiasis (AAT) poses a substantial risk of spillover and the transmission of different species and strains among populations, impacting both livestock and wildlife. Increased human activity and pressure on land resources are increasing wildlife-livestock-human infections. In addition to the role of human Trypanosoma reservoir, animals can become infected and ill as a consequence of the activity of other forms of trypanosomes, such as Trypanosoma congolense, Trypanosoma vivax, Trypanosoma brucei brucei, Trypanosoma simiae, Trypanosoma evansi, and others. Tsetse flies (Glossina spp.) can transfer parasites through their salivary glands or, in rare instances, by congenital transmission. Chagas disease (Morbus Chagas), also known as American trypanosomiasis, is a chronic infection caused by Trypanosoma cruzi. The competent vectors of Chagas disease are bed bugs from the genera Triatoma, Rhodnius, and Panstrongylus. All major groups of mammals, including Artiodactyla, Chiroptera, Primates, Carnivora, Rodentia, Cingulata, Pilosa, and Didelphimorphia, have been shown to participate in the transmission cycle of T. cruzi. Chagas disease is endemic in Central and South America. Human and animal trypanosomiases continue to present a major human and animal public health threat globally. The high genetic diversity of Trypanosoma spp. requires further research to prevent cross-species transmission, which could affect animal, human, and environmental health. In this chapter, we delve into the most significant Trypanosoma species, their epidemiology, distribution, importance for biodiversity, and public health.

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“…A tripanossomose causada por T. vivax em ruminantes, particularmente bovinos, tem como sinais clínicos na sua forma aguda: febre intermitente, anemia, perda de peso e de condição corporal, queda na produção de leite, letargia, fraqueza, descarga nasal e ocular, diarreia, aumento de linfonodos, edema de barbela, aborto, paresia de membros posteriores e alterações neurológicas, podendo culminar com a morte do animal CADIOLI et al, 2012;DESQUESNES, 2004;GARCIA PÉREZ et al, 2020;SILVA et al, 2002).…”

Section: Trypanosoma Vivaxunclassified

>b<Identificação e caracterização de tripanossomatídeos em ruminantes provenientes de área endêmica para leishmanioses no estado de São Paulo>/b<

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Ao meu "companheirinho" inseparável de jornada desde o início do mestrado, Martin. AGRADECIMENTOSÀ minha família por todo o apoio e torcida para que tudo desse certo nessa caminhada, em especial à minha mãe (Rosana) e minha tia (Rosângela) por cuidarem do meu bem mais precioso quando eu precisava me ausentar.À minha irmã (Mayra) por ser inspiração e conselho.Ao meu esposo (Kauê) pelo apoio e compreensão.À minha amiga Bianca pelo apoio, escuta e conselho.Aos meus queridos amigos Wellington Bessi e Gustavo Morandini pela ajuda nas coletas.À minha orientadora Trícia por me nortear na execução de todo o projeto, pela paciência e confiança.Aos queridos amigos que fiz no LMVPA por tornarem o dia a dia leve e divertido.Aos queridos amigos Júlia, João, Nathalia, Maria Luana, Júlio e Diogo pela ajuda nas coletas e análises, jamais conseguirei expressar o tamanho da minha gratidão.Aos queridos amigos Pedro, Jéssica, Artur e Gabriele pela ajuda nas coletas e análises e por proporcionarem momentos de boas risadas.À amiga que fiz nos últimos meses de trabalho, Andreina, pela disposição, ajuda e incentivo.À secretaria do Departamento de Medicina Veterinária Preventiva e Saúde Animal, Danival e Vanessa, por toda ajuda e pronto esclarecimento de dúvidas.Ao Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) pela bolsa de mestrado.Ao Professor Rafael Silvio Bonilha Pinheiro por disponibilizar pequenos ruminantes da UNESP de Ilha Solteira para fazerem parte deste projeto.A DEUS, pela dádiva da vida todos os dias. "É preciso uma aldeia inteira para educar uma criança."Provérbio Africano RESUMO MASSUDA, M. B. Identificação e caracterização de tripanossomatídeos em ruminantes provenientes de área endêmica para leishmanioses no estado de São Paulo. 2023.

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High Trypanosoma vivax infection rates in water buffalo and cattle in the Brazilian Lower Amazon

Cited by 7 publications

References 50 publications

Evaluation of techniques for diagnosis of Trypanosoma vivax infections in naturally infected cattle in the Zona da Mata Mineira

Evaluation of techniques for diagnosis of Trypanosoma vivax infections in naturally infected cattle in the Zona da Mata Mineira

Epidemiology of Animal Trypanosomiasis

>b<Identificação e caracterização de tripanossomatídeos em ruminantes provenientes de área endêmica para leishmanioses no estado de São Paulo>/b<

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