- food contaminated at a farm, production facility, or distribution facility,
- food contaminated by an ill food worker, or
- food contaminated via contaminated surfaces at food service establishments.
California Code of Regulations, Title 17, requires healthcare providers to immediately report cases of foodborne illness to the LHD if an outbreak is suspected.
Foodborne outbreak surveillance helps identify pathogens, foods, settings, and conditions that contribute to foodborne outbreaks. Foodborne outbreak investigations are conducted through collaboration between public health staff from epidemiology/communicable diseases, public health laboratory, and environmental health disciplines. These investigations help public health officials control outbreaks and prevent more people from getting sick.