Why do new food safety issues emerge?
New food safety issues emerge for many reasons. a microorganism evolves to become pathogenic, or a pathogen evolves to become more virulent. Other times, the change is linked to the people at risk for foodborne illness. For example, they may become more susceptible to illness if their immune system is not functioning at an optimal level. Changes to the microbial environment can provide new vehicles for pathogen contamination of foods. The interrelationship of these factors is so complex that it is impossible to describe all the reasons a food safety issue could emerge.