Sporadic re-emergence of enzootic porcine transmissible gastroenteritis in Hungary

Lőrincz, Márta; Biksi, Imre; Andersson, Simon; Cságola, Attila; Tuboly, Tamás

doi:10.1556/avet.2013.043

Cited by 5 publications

(8 citation statements)

References 20 publications

(20 reference statements)

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“…Surprisingly, PEDV was not found in any samples, as opposed to what has been assumed after the reappearance of the virus in the country in 2016 (Valkó et al, 2017). The case was similar with TGEV, which was detected for the last time in Hungary in 2013 (Lőrincz et al, 2014), although the absence of this coronavirus may be explained by the cross-protection provided by antibodies produced against PRCV. The absence of these coronaviruses is similar to that found in a Slovakian study, where neither PEDV nor TGEV was detected from 411 rectal swabs collected between the years 2013 and 2016 (Salamunova et al, 2018).…”

Section: Discussionmentioning

confidence: 55%

Frequency of diarrhoea-associated viruses in swine of various ages in Hungary

Valkó

Marosi

Cságola

et al. 2019

Acta Veterinaria Hungarica

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Enteric viral diseases of swine are one of the most frequent disorders causing huge economic losses in pork production. After the reappearance of an emerging enteropathogen, porcine epidemic diarrhoea virus (PEDV) in Hungary in 2016, an extensive survey was initiated in an attempt to identify diarrhoea-related porcine viruses, including adeno-, astro-, boca-, calici-, circo-, corona-, kobu-, rota-and Torque teno viruses. A total of 384 faecal samples collected during a twoyear period from diarrhoeic and asymptomatic pigs of various ages in 17 farms were screened by conventional and real-time PCR methods. Half of the samples contained at least one examined virus with the dominance of kobuvirus (55.1%) followed by bocaviruses (33.2%) and rotavirus groups A and C together (20.9%), while coronaviruses including PEDV were not found in this set of samples. Statistical analysis showed a highly significant difference (P < 0.0001) in the frequency of single infections compared to mixed ones with the exception of weaned pigs, in which group additionally most viruses were detected. The results of this study suggest that the complexity of this disease may vary with age, which makes the prevention of diarrhoea a challenge, especially in weaned pigs.

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Section: Discussionmentioning

confidence: 55%

Frequency of diarrhoea-associated viruses in swine of various ages in Hungary

Valkó

Marosi

Cságola

et al. 2019

Acta Veterinaria Hungarica

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“…However, TGEV has been already detected in neighbouring countries. TGEV is present in Hungary and causes sporadic outbreaks in pig herds [ 27 ]. Antibodies against TGEV have also been found in wild boars in Czech Republic [ 28 ].…”

Section: Discussionmentioning

confidence: 99%

Molecular detection of enteric viruses and the genetic characterization of porcine astroviruses and sapoviruses in domestic pigs from Slovakian farms

et al. 2018

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BackgroundSurveillance and characterization of pig enteric viruses such as transmissible gastroenteritis virus (TGEV), porcine epidemic diarrhea virus (PEDV), rotavirus, astrovirus (PAstV), sapovirus (PSaV), kobuvirus and other agents is essential to evaluate the risks to animal health and determination of economic impacts on pig farming. This study reports the detection and genetic characterization of PAstV, PSaV in healthy and diarrheic domestic pigs and PEDV and TGEV in diarrheic pigs of different age groups.ResultsThe presence of PAstV and PSaV was studied in 411 rectal swabs collected from healthy (n = 251) and diarrheic (n = 160) pigs of different age categories: suckling (n = 143), weaned (n = 147) and fattening (n = 121) animals on farms in Slovakia. The presence of TGEV and PEDV was investigated in the diarrheic pigs (n = 160). A high presence of PAstV infections was detected in both healthy (94.4%) and diarrheic (91.3%) pigs. PSaV was detected less often, but also equally in clinically healthy (8.4%) and diarrheic (10%) pigs. Neither TGEV nor PEDV was detected in any diarrheic sample. The phylogenetic analysis of a part of the RdRp region revealed the presence of all five lineages of PAstV in Slovakia (PAstV-1 – PAstV-5), with the most frequent lineages being PAstV-2 and PAstV-4. Analysis of partial capsid genome sequences of the PSaVs indicated that virus strains belonged to genogroup GIII. Most of the PSaV sequences from Slovakia clustered with sequences originating from neighbouring countries.ConclusionsDue to no significant difference between healthy and diarrheic pigs testing of the presence of PAstV and PSaV provides no diagnostic value. Genetic diversity of PAstV was very high as all five lineages were identified in pig farms in Slovakia. PSaV strains were genetically related to the strains circulating in Central European region.

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“…The virus neutralization assay cannot be used to differentiate TGEV and PRCV, therefore various enzyme-linked immunosorbent assays (ELISA) were developed using monoclonal antibodies targeting the different epitopes of the S protein (Carman et al, 2002). Serological tests such as these can be used to monitor herd status or newly transported animals, as TGEV/PRCV-seronegative farms are at risk of the disease, although TGE outbreaks occurred only sporadically since the appearance of PRCV (Lőrincz, Biksi, Andersson, Cságola, & Tuboly, 2013).…”

Section: Introductionmentioning

confidence: 99%