Foodborne viruses: the risk is different from bacteria
Viruses can reach food through people, water, the environment or infected animals. They do not multiply in food, but food can carry them to the consumer. Understanding that distinction is fundamental to controlling the risk.
Different viruses. Different routes. Different controls.
Norovirus
A major cause of gastroenteritis. Food can become contaminated during primary production, through contaminated shellfish-growing waters or by infected food handlers.
Explore norovirus →Hepatitis A
Transmitted by the faecal-oral route and associated with contaminated water, food handling, produce, berries and bivalve shellfish.
Explore hepatitis A →Hepatitis E
Foodborne HEV in Europe is primarily zoonotic, with pigs an important reservoir and undercooked pork products a key consideration.
Explore hepatitis E →Conventional food-safety thinking can miss viral hazards
Food is a vehicle, not a growth medium
Enteric viruses need susceptible living cells to replicate. The controls used to manage bacterial growth therefore do not map neatly onto viral risk.
Prevention matters
Contamination can occur before harvest, during processing or through food handling. Effective control starts by understanding where a virus can enter a particular food chain.
A result needs context
Molecular methods can detect viral RNA in food, but detection does not by itself demonstrate infectivity. Sampling, the food matrix, analytical controls and the reason for testing all matter when interpreting a result.
Food virus testing advice →Understand the risk, then apply it to real food situations
This overview introduces the principles. The ViroSafety self-paced course provides the structured learning, applied examples, outbreaks, control considerations, testing concepts and knowledge checks needed to develop a fuller understanding of foodborne viruses. You can also read about Martin D’Agostino’s food virology experience and background.
Explore the online course →Bespoke company training →
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