The majority of these outbreaks was either from meat products or had an unknown source; nonetheless outbreaks related to tree fruit or nuts have occurred..To reduce the risk of contamination, each step in the production of fresh fruits and nuts must be examined, beginning with field conditions. For tree fruits meant .Pathogen contamination of fresh produce has important public health consequences. Chapter 11 - Tree Fruits and Nuts: Outbreaks, Contamination Sources, .Sources of facility-related biological hazards. 184.108.40.206 Food products can become contaminated with biological, chemical Milk, eggs, fish, crustacean s.fish, tree nuts, peanuts, wheat, and soybeans animals, dropped fruit, . Examples of events and foodborne illness outbreaks due to contamination of RTE foods are..