This document provides an introduction to food safety. It defines food safety as ensuring food will not cause harm when prepared and eaten as intended. Foodborne illness occurs when food is contaminated during improper handling, preparation, or storage. Common pathogens that cause foodborne illness are Salmonella, E. coli, and other bacteria. Factors like time, temperature, and moisture can allow bacteria to grow. Proper hygiene for food handlers, including handwashing and clean attire, is important to prevent cross-contamination.