Health officials say experts have been to a site in Victoria where poisonous wild mushrooms were picked, and dug up the rest of them so no one else gets sick from eating the fungi.
The move comes after someone ate a wild mushroom picked in the city's downtown and became seriously ill.
The Island Health authority's chief medical health officer Doctor Richard Stanwick says enough mushrooms to kill 12 people were found at the site, and the samples have been sent to a lab for testing.
Stanwick says the ill person has been transferred from an intensive care unit in Victoria to a hospital in Alberta, and he's warning others not to eat the fungus known as death cap mushrooms.