Dynamics of Fasciola hepatica transmission in the Andean Patagonian valleys, Argentina

Kleiman, Florencia; Pietrokovsky, Silvia; Prepelitchi, Lucila; Carbajo, Aníbal Eduardo; Wisnivesky‐Colli, Cristina

doi:10.1016/j.vetpar.2006.12.020

Cited by 39 publications

(30 citation statements)

References 37 publications

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“…This finding may be epidemiologically relevant and should be investigated because on farms that lack flooded areas, infected mollusks may reach the animals' drinking water reservoirs, thus allowing the metacercariae to encyst in substrates present in the reservoirs. In the Patagonia region of Argentina, Kleiman et al (2007) reported high prevalence of infected animals (52%) and infected L. viatrix, which ranged from 0.9 to 14%, depending on the sampling site and the season, with no infected mollusks detected in the spring. In the valley of the Paraíba River, infected L. columella was found in every month except December during a three-year study (AMATO et al, 1986).…”

Section: Resultsmentioning

confidence: 95%

Distribution of bovine fasciolosis and associated factors in south Espírito Santo, Brazil: an update

Martins

Avelar

Bernardo

et al. 2014

Rev. Bras. Parasitol. Vet.

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The geographical distribution and factors associated with bovine fasciolosis in the south of Espírito Santo were updated and the prevalences of this disease and of snails of the genus Lymnaea in the municipality of Jerônimo Monteiro were calculated. In the first stage, fecal samples were collected from 10% of the herds of 115 farms in 23 municipalities and interviews were conducted with owners. Generalized linear mixed models were used. In the second stage, in Jerônimo Monteiro municipality, feces and mollusks were collected from all farms registered in the milk cooperatives in the region. The mollusks were identified and examined for infection by Fasciola hepatica. Fasciolosis was diagnosed in 18 (78%) of the 23 municipalities. Of the 1157 fecal samples examined, 19.01% were positive for eggs of F. hepatica. The final model shows statistical evidence of associations between positive farms and previous cases of fasciolosis and concomitant grazing of cattle with other definitive hosts. In the evaluated farms from the studied municipality the prevalence of fasciolosis and Lymnaea was of 66.7% and 23.8%, respectively. Mollusks were found in flooded areas and the animals' drinking water troughs. The wide geographical distribution of bovine fasciolosis in the south of Espírito Santo requires control measures to prevent its expansion towards the north of this state and other places characterized as F. hepatica free-infection.Keywords: Fasciola hepatica, Lymnaea, epidemiology. ResumoRealizou-se um estudo atualizado da distribuição geográfica e dos fatores associados à fasciolose bovina, no Sul do Estado do Espírito Santo, e calculadas a prevalência de moluscos do gênero Lymnaea no município de Jerônimo Monteiro. Na primeira etapa, coletaram-se amostras fecais de 10% dos rebanhos de 115 propriedades, em 23 municípios, e realizaram-se entrevistas com os proprietários. Modelos lineares generalizados mistos foram utilizados. Na segunda etapa, em Jerônimo Monteiro, coletaram-se fezes e moluscos em todas as propriedades cadastradas nas cooperativas de leite da região. Os moluscos foram identificados e examinados quanto à infecção por Fasciola hepatica. A fasciolose foi diagnosticada em 18 (78%) dos 23 municípios. Das 1157 amostras fecais examinadas, 19,01% foram positivas para ovos de F. hepatica. O modelo final mostra, concomitantemente, evidências estatísticas de associação entre propriedades positivas e casos anteriores de fasciolose e de pastoreio de bovinos com outros hospedeiros definitivos. Em Jerônimo Monteiro, a prevalência de fasciolose foi 66,7% e de Lymnaea 23,8%. Moluscos foram encontrados em áreas alagadas e em bebedouros dos animais. A ampla distribuição geográfica da fasciolose bovina, no Sul do Espírito Santo, requer medidas de controle que evitem sua expansão em direção ao Norte do Estado.Palavras-chave: Fasciola hepática, Lymnaea, epidemiologia.

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Section: Resultsmentioning

confidence: 95%

Distribution of bovine fasciolosis and associated factors in south Espírito Santo, Brazil: an update

Martins

Avelar

Bernardo

et al. 2014

Rev. Bras. Parasitol. Vet.

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“…Due to the increasing number of human cases, the liver flukes should be considered as an emerging public health concern [5] . On the other hand, they cause major diseases of livestock that produce important economic losses due to mortality, liver condemnation, reduced production of meat, milk, and wool, and expenditures of anthelmintics [6] .…”

Section: Introductionmentioning

confidence: 99%

Prevalence of fasciolosis and dicrocoeliosis in slaughtered sheep and goats in Amol Abattoir, Mazandaran, northern Iran

Khanjari

Bahonar

Fallah

et al. 2014

Asian Pacific Journal of Tropical Disease

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“…Although the disease has been reported in humans in many other parts of the world, including several states of Brazil, it has not been recorded in Espírito Santo (Igreja et al, 2004). Epidemiological knowledge about when, where and at what intensity there is risk of infection by F. hepatica is essential for the development of strategic control programmes (Kleiman et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Application of a geographical information system approach for risk analysis of fascioliasis in southern Espírito Santo state, Brazil

et al. 2012

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Abstract.A model based on geographical information systems for mapping the risk of fascioliasis was developed for the southern part of Espírito Santo state, Brazil. The determinants investigated were precipitation, temperature, elevation, slope, soil type and land use. Weightings and grades were assigned to determinants and their categories according to their relevance with respect to fascioliasis. Theme maps depicting the spatial distribution of risk areas indicate that over 50% of southern Espírito Santo is either at high or at very high risk for fascioliasis. These areas were found to be characterized by comparatively high temperature but relatively low slope, low precipitation and low elevation corresponding to periodically flooded grasslands or soils that promote water retention.

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Dynamics of Fasciola hepatica transmission in the Andean Patagonian valleys, Argentina

Cited by 39 publications

References 37 publications

Distribution of bovine fasciolosis and associated factors in south Espírito Santo, Brazil: an update

Distribution of bovine fasciolosis and associated factors in south Espírito Santo, Brazil: an update

Prevalence of fasciolosis and dicrocoeliosis in slaughtered sheep and goats in Amol Abattoir, Mazandaran, northern Iran

Application of a geographical information system approach for risk analysis of fascioliasis in southern Espírito Santo state, Brazil

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