'Unprecedented' shellfish poisoning leaves at least 20 people ill
0
!['Unprecedented' shellfish poisoning leaves at least 20 people ill](https://e3.365dm.com/24/06/1920x1080/skynews-oregon-shellfish_6571368.jpg?20240602041101)
An "unprecedented" outbreak of shellfish poisoning has forced the authorities in Oregon to close the entire state's coastline to mussel harvesting.