Surveillance of feral swine for Trichinella spp. and Toxoplasma gondii in the USA and host-related factors associated with infection

Hill, Dolores E.; Dubey, J. P.; Baroch, John A.; Swafford, Seth R.; Fournet, V.F.; Hawkins-Cooper, D.S.; Pyburn, David G.; Schmit, Brandon S.; Gamble, H. Ray; Pedersen, Kerri; Ferreira, L. R.; Verma, Shiv Kumar; Ying, Yuqing; Kwok, O. C. H.; Feidas, H.; Théodoropoulos, Georgios

doi:10.1016/j.vetpar.2014.07.026

Cited by 47 publications

(34 citation statements)

References 51 publications

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“…including Toxoplasma gondii and Trichinella spp. (Hill et al, 2014). In the present study, we report results of seroprevalence of N. caninum in feral swine.…”

Section: Introductionmentioning

confidence: 74%

“…Serum samples from 1059 feral swine (Sus scrofa) were collected by WS-NWDP from 29 states of the US (Table 1) and submitted to the Animal Parasitic Diseases Laboratory (APDL), USDA, Beltsville, Maryland as described previously (Hill et al, 2014). Age-class was established based on lower jaw tooth eruption criteria (Matschke, 1967) and, together with sex, were recorded for each animal.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Seroprevalence of Neospora caninum in feral swine (Sus scrofa) in the United States

Cerqueira‐Cézar¹,

Pedersen²,

Calero‐Bernal³

et al. 2016

Veterinary Parasitology

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“…including Toxoplasma gondii and Trichinella spp. (Hill et al, 2014). In the present study, we report results of seroprevalence of N. caninum in feral swine.…”

Section: Introductionmentioning

confidence: 74%

Section: Methodsmentioning

confidence: 99%

Seroprevalence of Neospora caninum in feral swine (Sus scrofa) in the United States

Cerqueira‐Cézar¹,

Pedersen²,

Calero‐Bernal³

et al. 2016

Veterinary Parasitology

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“…This parasite has a wide host range and can pose a risk to native avian fauna that do not have an evolutionary history with the parasite (Work et al, 2000). In addition, T. gondii is zoonotic; due to the popularity of wild pig hunting for sport and population management, hunters in Guam should properly butcher and cook wild pig meat (Hill et al, 2014;Conry 1988).…”

Section: Discussionmentioning

confidence: 99%

“…Wild pigs are nearly globally distributed and are hosts for many parasites and bacterial and viral pathogens, some of which are transmissible to agricultural animals, wildlife, and humans (Barrios-Garcia and Ballari, 2012;Bevins et al, 2014). Numerous studies have investigated the prevalence and distribution of various pathogens in wild pigs and the risk they pose for pathogen transmission in the United States and Europe, but there are relatively few reports from Southeast Asia (Baroch et al, 2015;Hill et al, 2014;Pedersen et al, 2014Pedersen et al, , 2015Pepin et al, 2016). Wild pig populations are increasing dramatically on several Pacific islands, yet data on pathogen exposure are limited or absent.…”

Section: Introductionmentioning

confidence: 99%

Survey for selected pathogens in wild pigs ( Sus scrofa ) from Guam, Marianna Islands, USA

Cleveland

DeNicola²,

Dubey

et al. 2017

Veterinary Microbiology

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Pigs (Sus scrofa) were introduced to Guam in the 1600's and are now present in high densities throughout the island. Wild pigs are reservoirs for pathogens of concern to domestic animals and humans. Exposure to porcine parvovirus, transmissible gastroenteritis, and Leptospira interrogans has been documented in domestic swine but data from wild pigs are lacking. The close proximity of humans, domestic animals, and wild pigs, combined with the liberal hunting of wild pigs, results in frequent opportunities for pathogen transmission. From February-March 2015, blood, tissue and ectoparasite samples were collected from 47 wild pigs. Serologic testing found exposure to Brucella spp. (2%), Toxoplasma gondii (11%), porcine reproductive and respiratory syndrome (PRRS) virus (13%), porcine circovirus type 2 (36%), pseudorabies virus (64%), Actinobacillus pleuropneumoniae (93%), Lawsonia intracellularis (93%), and porcine parvovirus (94%). Eleven (24%) samples had low titers (1:100) to Leptospira interrogans serovars Bratislava (n=6), Icterohaemorrhagiae (n=6), Pomona (n=2), and Hardjo (n=1). Kidney samples from nine pigs with Leptospira antibodies were negative for Leptospira antigens. Numerous pigs had Metastrongylus lungworms and three had Stephanurus dentatus. Lice (Hematopinus suis) and ticks (Amblyomma breviscutatum) were also detected. No antibodies to Influenza A viruses were detected. In contrast to the previous domestic swine survey, we found evidence of numerous pathogens in wild pigs including new reports of pseudorabies virus, PRRS virus, Brucella, and Leptospira in pigs on Guam. These findings highlight that domestic swine-wild pig interactions should be prevented and precautions are needed when handling wild pigs to minimize the risk of pathogen transmission.

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“…MaxEnt can make predictions of species distribution based on incomplete data and can estimate the relative importance of each identified risk variable by means of the jackknife test [9]. To develop and test the model produced by this analysis, 75% of the data were used as training data and the remaining 25% were used to test the model’s predictive ability [36].…”

Section: Methodsmentioning

confidence: 99%

Relative importance of meteorological and geographical factors in the distribution ofFasciola hepaticainfestation in farmed sheep in Qinghai province, China

2016

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Fasciola hepatica is an important trematode parasite of economic importance that infests sheep and cattle worldwide. We conducted a detailed investigation into the spatial distribution of F. hepatica infestation in farmed sheep in Qinghai (Wutumeiren) province, Mainland China. Mathematical modelling was used to assess the inter-relationships between meteorological and geographical factors and the risk of F. hepatica infestation across the province. A capture enzyme-linked immunosorbent assay (ELISA) test (MM3-SERO) was used to detect F. hepatica infestation. A niche model based on the maximum entropy method (MaxEnt) was used to estimate the influence of meteorological and geographical factors on the observed spatial distribution of F. hepatica infestation. Results of jackknife analysis indicated that temperature, precipitation, solar radiation, digital elevation and slope were associated with the occurrence of F. hepatica infestation, and that infestation rates were significantly higher among animals from districts with a high percentage of grassland habitat. The findings indicate that meteorological and geographical factors may be important variables affecting the distribution of F. hepatica infestation and should be taken into account in the development of future surveillance and control programmes for fascioliasis.

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Surveillance of feral swine for Trichinella spp. and Toxoplasma gondii in the USA and host-related factors associated with infection

Cited by 47 publications

References 51 publications

Seroprevalence of Neospora caninum in feral swine (Sus scrofa) in the United States

Seroprevalence of Neospora caninum in feral swine (Sus scrofa) in the United States

Survey for selected pathogens in wild pigs ( Sus scrofa ) from Guam, Marianna Islands, USA

Relative importance of meteorological and geographical factors in the distribution ofFasciola hepaticainfestation in farmed sheep in Qinghai province, China

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