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English Cymraeg

Food poisoning

Bacteria and viruses that can cause food poisoning and how to avoid the risk of getting ill.

Food poisoning is caused by eating something that has been contaminated with germs.

This can happen if food:

  • is not cooked or reheated thoroughly
  • is not stored correctly – for example, it has not been frozen or chilled
  • is left out for too long
  • is handled by someone who is ill or has not washed their hands
  • is eaten after its 'use by' date

Any type of food can cause food poisoning.

Find out more about bacteria and viruses that can cause food poisoning and how to reduce the risk of getting ill.