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Bovine spongiform encephalopathy.

M J Prince1, J A Bailey, P R Barrowman

  • 1Department for Environment, Food and Rural Affairs, 1A Page Street, London SW1P 4PQ, United Kingdom.

Revue Scientifique Et Technique (International Office of Epizootics)
|June 10, 2003
PubMed
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Bovine spongiform encephalopathy (BSE) is a feed-borne infection. Control measures, including removing risk materials and enforcing compliance, are crucial for preventing its spread in cattle and protecting public health.

Area of Science:

  • Veterinary Epidemiology
  • Food Safety Science
  • Animal Health

Background:

  • Bovine spongiform encephalopathy (BSE) emerged as a feed-borne disease linked to contaminated meat-and-bone meal.
  • Potential origins include scrapie, genetic mutation, or other transmissible spongiform encephalopathies.

Purpose of the Study:

  • To identify risk materials and their infectivity levels for BSE transmission.
  • To understand the impact of species barriers, infectious dose, route, agent strain, and host genotype on transmission risk.
  • To evaluate the effectiveness of control measures and compliance.

Main Methods:

  • Epidemiological studies to trace infection sources.
  • Experimental research to determine infectivity of risk materials and transmission parameters.

Related Experiment Videos

  • Analysis of maternal and embryo transfer transmission routes.
  • Assessment of control measure implementation and enforcement.

    • Main Results:

    • Identification of infected tissues allowed removal from food chains, reducing risk.
    • Maternal transmission is unlikely to sustain outbreaks; offspring of clinical cases face higher risk with high feed exposure.
    • Embryo transfer did not transmit BSE infection.
    • Enforcement and auditing of control measures proved challenging, necessitating stricter regulations.

    Conclusions:

    • Targeted removal of risk materials is effective in controlling BSE.
    • Strict adherence to and enforcement of control measures, including prohibitions and audits, are vital for managing BSE.
    • Further research into transmission dynamics and control efficacy is warranted.