DEVELOPMENT OF A RAPID SNP PCR ASSAY TO DIFFERENTIATE BETWEEN EUROPEAN AND NORTH AMERICAN HAPLOTYPES OF ECHINOCOCCUS...

Area of Science:

• Veterinary Parasitology
• Molecular Diagnostics
• Public Health

Background:

• Echinococcus multilocularis is expanding in North America, with increasing prevalence in wildlife, domestic animals, and humans.
• European (EU) variants are considered more infective and pathogenic than North American (NA) variants, posing a greater risk of zoonotic spillover.
• Current diagnostics require DNA sequencing to differentiate E. multilocularis variants.

Purpose of the Study:

• To develop a rapid, single nucleotide polymorphism-specific polymerase chain reaction (PCR) assay.
• To differentiate between European and North American variants of Echinococcus multilocularis in clinical samples.
• To provide a tool for enhanced surveillance and public health decision-making.

Main Methods:

• Development of a single nucleotide polymorphism-specific polymerase chain reaction (PCR) assay.
• Application of the assay to clinical samples for variant detection.
• Conventional PCR method for genetic differentiation.

Main Results:

• The developed PCR assay successfully differentiates between NA and EU variants of E. multilocularis.
• The assay provides a rapid and straightforward alternative to DNA sequencing for variant identification.
• The method is suggested for diagnosing other genetically similar parasites or variants.

Conclusions:

• The new PCR assay is a valuable tool for detecting and differentiating E. multilocularis variants in North America.
• Accurate variant identification is essential for understanding the parasite's epidemiological shift and informing public health strategies.
• The assay's approach may be adaptable for diagnosing other genetically similar parasitic organisms.