Publications by authors named "Ewa Kwit"

Article Synopsis
  • European brown hare syndrome (EBHS) is a deadly disease affecting hares globally, but research on its virus (EBHSV) strains and their epidemiology is still incomplete.
  • A study focused on the genetic sequencing of EBHSV strains from Poland, analyzing their genetic relationships and mutations using various regions of the virus genome.
  • Results indicated a high genetic homogeneity among Polish EBHSV strains despite different detection times and locations, placing them closely in relation to other European strains, suggesting slow evolutionary changes in this virus.
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Introduction: The aim of the study was to estimate the diagnostic sensitivity (DSe) and specificity (DSp) of an agar gel immunodiffusion (AGID) assay for detection of myxoma virus (MYXV) in the classical form of myxomatosis and to compare its diagnostic performance to that of molecular methods (IAC-PCR, OIE PCR, and OIE real-time PCR).

Material And Methods: A panel of MYXV-positive samples of tissue homogenates with low (1 PCR unit - PCRU) and high (3,125 PCRU) virus levels and outbreak samples were used for method comparison studies. The validation parameters of the AGID assay were assessed using statistical methods.

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Hepatitis E virus (HEV) infects humans and many animal species. The rabbit HEV has been found in farmed, wild and pet rabbits as well as in human patients suggesting zoonotic transmission. Although the routes of human infection with rabbit strains are unclear a foodborne transmission is suggested especially when asymptomatically infected animals could enter the food chain.

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Recognition of myxomatosis is usually based on clinical symptoms, but amyxomatous cases of the disease require the use of laboratory methods. Nowadays PCR assays are routinely employed for detection of MYXV DNA, but none of them have had their diagnostic usefulness conclusively confirmed through validation. The aim of the study was the development and validation of a PCR with an internal amplification control (IAC) for intravital and postmortem detection of viral DNA of myxoma virus.

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Various PCR-based assays for rabbit viruses have gradually replaced traditional virologic assays, such as virus isolation, because they offer high-throughput analysis, better test sensitivity and specificity, and allow vaccine and wild-type virus strains to be fully typed and differentiated. In addition, PCR is irreplaceable in the detection of uncultivable or fastidious rabbit pathogens or those occurring in low quantity in a tested sample. We provide herein an overview of the current state of the art in the molecular detection of lagomorph viral pathogens along with details of their targeted gene or nucleic acid sequence and recommendations for their application.

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The aim of the study was to define the occurrence of human noroviruses of genogroup I and II (NoV GI and NoV GII) and hepatitis A virus (HAV) in the Baltic Sea mussels. The shellfish samples were taken at the sampling sites located on the Polish coast. In total, 120 shellfish were tested as pooled samples using RT-PCR and hybridisation with virus specific probes.

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