ABSTRACT
CONTENTS 17.1 Introduction ............................................................................................. 471 17.2 Epidemiologic Approaches ................................................................... 473 17.3 Risk Assessment Approaches ............................................................... 476 17.4 Possible Approaches for Zoonotic Risk Assessment ........................ 482 17.5 Risk Assessment of Foodborne Zoonosis ........................................... 483
17.5.1 Pathway...................................................................................... 484 17.5.2 Exposure Assessment............................................................... 486 17.5.3 Dose-Response Assessment.................................................... 488 17.5.4 Risk Characterization ............................................................... 490 17.5.5 Simple Model for the Annual Marginal Risk....................... 491 17.5.6 Complex Model for the Annual Marginal Risk................... 491 17.5.7 Model Use .................................................................................. 492
17.6 Conclusion ............................................................................................... 493 References ........................................................................................................... 494
Several authors and organizations have introduced different definitions for the term zoonosis; however, we believe that the definition adopted by the World Health Organization (WHO) is the one that makes the most sense and which many authors have adopted. The definition of zoonotic diseases adopted by the WHO is ‘‘those diseases and infections which are naturally transmitted between vertebrate animals and man’’ (WHO 1997). This proposed definition captures the essence of the meaning of zoonosis and emphasizes that the transmission of these diseases is under natural circumstances.
