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Dorset shellfish 'have dangerous toxins'

16 August 2014 Last updated at 00:25 BST

There are concerns that certain types of shellfish being caught off the Dorset coast may contain toxin levels above those safe for human consumption.

People who gather clams, oysters, mussels and scallops are being warned of the dangers.

Amnesic shellfish poisoning (ASP) can cause neurological symptoms such as dizziness and confusion, and in very rare cases, death.