Name the four (4) types of pathogens that can contaminate food and cause foodborne illness:

A pathogen is a harmful micro-organism that can contaminate food. These biological contaminants are responsible for nearly all types of foodborne illnesses. Most cannot be seen or tasted. Identifying and familiarizing yourself with the types and sources of these biological contaminants is an important step in preventing them from being introduced to or spread in a food service setting.