Cryptosporidium in market pigs in southern California, USA

Jv, Tacal; Sobieh, M. A.; El-Ahraf, Amer

doi:10.1136/vr.120.26.615

Cited by 25 publications

(9 citation statements)

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“…The results of this study revealed high prevalence (30%) of Cryptosporidium infection in slaughtered finishers (5.5-6 months old), whereas a much lower prevalence (5-12%) has been detected in pigs of the same age category by Tacal et al (1987), Suárez-Luengas et al (2007), and Zintl et al (2007). Similar results were published by Quílez et al (1996), who found Cryptosporidium in 34% of 2-6 month old fattening pigs.…”

Section: Discussionsupporting

confidence: 79%

Molecular characterization of Cryptosporidium isolates from pigs at slaughterhouses in South Bohemia, Czech Republic

et al. 2008

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A total of 123 fecal samples of slaughtered finisher pigs and 21 sows from 14 farms were screened for Cryptosporidium spp. infection using the aniline-carbol-methyl violet staining method. Positive samples were molecularly characterized by direct sequencing of partial small subunit ribosomal RNA (SSU rRNA) and GP60 partial genes and polymerase chain reaction restriction fragment length polymorphism of SSU rRNA. Cryptosporidium oocysts were microscopically identified in 36 finishers (29%) and two sows (10%). Twenty-one mono-infections of Cryptosporidium pig genotype II and 15 mixed-infection of Cryptosporidium pig genotype II and Cryptosporidium suis in finishers were found. Both sows were infected with the Cryptosporidium parvum subgenotype IIaA16G1R1, which is reported from pigs for the first time.

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Section: Discussionsupporting

confidence: 79%

Molecular characterization of Cryptosporidium isolates from pigs at slaughterhouses in South Bohemia, Czech Republic

et al. 2008

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“…A high rate of prevalence ranging from 62.4% to 71.7% has occasionally been reported in adult cattle (Lorenzo-Lorenzo et al 1993;Scott et al 1995), and infection has also been described in mature pigs (Tacal et al 1987). In an epidemiology survey previously carried out in Aragón (Quílez et al, unpublished data), we found that 17.8% of cows were infected, whereas none of the sows was shedding C. parvum oocysts.…”

Section: Ifa Titermentioning

confidence: 76%

Comparison of oocyst shedding and the serum immune response to Cryptosporidium parvum in cattle and pigs

et al. 1996

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A comparison was made between oocyst shedding and the presence of specific serum IgG antibodies to Cryptosporidium parvum in 108 bovines and 90 pigs. Oocysts were detected by a commercial immunofluorescence assay in feces from 26.8% of bovines and 34.4% of pigs, whereas positive titers as determined by an indirect fluorescent antibody method were found in sera from 12.9% and 48.9% of the respective animals. Infection was significantly most frequent in suckling calves (82.7%) and weaned piglets (87.5%). By contrast, the numbers of seropositives were highest in weaned calves (17.1%) and fattening pigs (76.6%). The results of coprological and serological analysis corresponded in 65.7% of bovines and 56.7% of pigs. When used to diagnose the shedding of cryptosporidial oocysts, the detection of specific IgG antibodies had a sensitivity ranging from 10.3% (cattle) to 58.1% (pigs) and a specificity of 86.1% (cattle) and 55.9% (pigs).

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“…In sheep, Cryptosporidium ubiquitum, Cryptosporidium xiaoi and C. parvum have been reported relatively frequently, whereas for goats, species and genotypes of Cryptosporidium are not comprehensively documented (Santín, 2013). Cryptosporidiosis and giardiasis in pigs and horses are often asymptomatic, even though there were some reports of disease in very young animals (Hamnes et al, 2007;Rotkiewicz et al, 2001;Tacal et al, 1987;Xiao and Herd, 1994).…”

Section: Brief Account Of Cryptosporidium and Giardia Of Humansmentioning

confidence: 99%

A Perspective on Cryptosporidium and Giardia, with an Emphasis on Bovines and Recent Epidemiological Findings

Abeywardena

Jex

Gasser

2015

Advances in Parasitology

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Cryptosporidium and Giardia are two common aetiological agents of infectious enteritis in humans and animals worldwide. These parasitic protists are usually transmitted by the faecal-oral route, following the ingestion of infective stages (oocysts or cysts). An essential component of the control of these parasitic infections, from a public health perspective, is an understanding of the sources and routes of transmission in different geographical regions. Bovines are considered potential sources of infection for humans, because species and genotypes of Cryptosporidium and Giardia infecting humans have also been isolated from cattle in molecular parasitological studies. However, species and genotypes of Cryptosporidium and Giardia of bovids, and the extent of zoonotic transmission in different geographical regions in the world, are still relatively poorly understood. The purpose of this article is to (1) provide a brief background on Cryptosporidium and Giardia, (2) review some key aspects of the molecular epidemiology of cryptosporidiosis and giardiasis in animals, with an emphasis on bovines, (3) summarize research of Cryptosporidium and Giardia from cattle and water buffaloes in parts of Australasia and Sri Lanka, considering public health aspects and (4) provide a perspective on future avenues of study. Recent studies reinforce that bovines harbour Cryptosporidium and Giardia that likely pose a human health risk and highlight the need for future investigations of the biology, population genetics and transmission dynamics of Cryptosporidium and Giardia in cattle, water buffaloes and other ruminants in different geographical regions, the fate and transport of infective stages following their release into the environment, as well as for improved strategies for the control and prevention of cryptosporidiosis and giardiasis, guided by molecular epidemiological studies.

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Cryptosporidium in market pigs in southern California, USA

Cited by 25 publications

References 0 publications

Molecular characterization of Cryptosporidium isolates from pigs at slaughterhouses in South Bohemia, Czech Republic

Molecular characterization of Cryptosporidium isolates from pigs at slaughterhouses in South Bohemia, Czech Republic

Comparison of oocyst shedding and the serum immune response to Cryptosporidium parvum in cattle and pigs

A Perspective on Cryptosporidium and Giardia, with an Emphasis on Bovines and Recent Epidemiological Findings

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