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Risk Assessment Model for Human Infection with the Cestode Taenia saginata.

Peter B van der Logt1, Steve C Hathaway1, David J Vose2

  • 1New Zealand Ministry of Agriculture, P.O. Box 2526, Wellington, New Zealand.

Journal of Food Protection
|June 19, 2019
PubMed
Summary
This summary is machine-generated.

This study developed a probabilistic risk assessment model for Taenia saginata in New Zealand cattle. The findings indicate extremely low human health risks, questioning the necessity of current inspection procedures for this food-borne disease.

Keywords:
New Zealandbeef cattlemeat inspectionrisk assessment

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Area of Science:

  • Food Safety and Public Health
  • Veterinary Epidemiology
  • Risk Assessment Modeling

Background:

  • Taenia saginata (tapeworm) poses a potential risk to human health through consumption of contaminated cattle products.
  • Effective monitoring and inspection protocols are crucial for managing food-borne diseases in both domestic and export markets.

Purpose of the Study:

  • To develop and apply a probabilistic risk assessment model for Taenia saginata in the New Zealand cattle population.
  • To estimate the human health risks associated with Taenia saginata consumption.
  • To evaluate the effectiveness of current postmortem inspection procedures.

Main Methods:

  • Development of a probabilistic risk assessment model using Monte Carlo simulations.
  • Establishment of a standardized monitoring program for suspect cysts during postmortem inspection.
  • Application of the model to domestic and export market scenarios.

Main Results:

  • Estimated mean human infections per year: 0.50 (export) and 1.10 (domestic).
  • Simulated removal of postmortem inspection increased infections to 0.61 (export) and 1.30 (domestic).
  • Clinical symptoms associated with Taenia saginata are mild and treatable, with very low overall risk estimates.

Conclusions:

  • The human health risks from Taenia saginata in New Zealand are extremely low.
  • Current postmortem inspection procedures for Taenia saginata may not be cost-effective given the low risk.
  • Monte Carlo methods offer a valuable tool for modeling food-borne disease risks.