Book excerpt: Humans suffer from numerous parasitic foodborne zoonoses, many of which are caused by helminths. The helminth zoonoses of concern in this book were once limited to diseases of animals, but have now become transmissible to humans. This book reviews not only the prevalence and distribution of these zoonoses, including available health and economic impact data, but highlights gaps in our knowledge that must be filled in order to assess the importance of a particular zoonosis.