A food poisoning outbreak happens when two or more people develop the same illness after eating the same food. Health authorities record hundreds of foodborne outbreaks in the United States every year, and restaurant settings account for a large share of reported outbreaks. Understanding how these outbreaks happen is the first step to preventing them.
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The Most Common Causes
Most restaurant outbreaks trace back to three problems. The first is infected food workers: norovirus spreads very easily from sick workers to food, and it is the most common cause of outbreaks. The second is cross-contamination, when germs move from raw foods to ready-to-eat foods on hands, boards or utensils. The third is food held at unsafe temperatures, which lets bacteria multiply to harmful levels before the food is served.
How Outbreaks Are Investigated
Outbreaks are investigated by local health departments, with support from national agencies. Investigators interview people who became ill, build food histories to find what the cases ate in common, and use laboratory testing to identify the germ involved. Inspecting the restaurant’s kitchen, storage and worker health practices then helps pinpoint exactly where things went wrong.
How Restaurants Prevent Outbreaks
Prevention rests on everyday habits done properly: worker health policies, so that sick workers stay home; regular and thorough hand hygiene; separation of raw and cooked foods; correct cooking temperatures and safe hot or cold holding; and proper cleaning and sanitising of surfaces and equipment.
What Diners Can Do
Diners can check hygiene inspection results where these are published, and choose places that look clean and handle food carefully. If you become ill after eating out and suspect the food, reporting it to your local health department helps investigators spot and stop outbreaks early.
This article is general information only and is not medical advice. Please consult a healthcare professional for personal advice.