Research by the Food Standards Agency shows there is no risk of parasites from farmed salmon. The European Food Safety Authority (EFSA) reviewed the available evidence on the presence of parasites in wild and farmed fish and concluded that farmed salmon destined to be eaten raw in dishes like sushi does not need to be frozen before consumption.
What is Anisakis?
Anisakis is a parasitic worm that can be found in certain species of wild marine fish. It can sometimes cause illness if people eat raw fish that has been affected by these worms. The illness cannot be transmitted human to human.
All fishery products must be inspected to remove visible parasites before being sold. Both cooking and freezing kills any parasites that may be present.