Carrot juice which was withdrawn from the market late last month is thought to be responsible for the illness of two Canadians who are paralyzed and are severely ill in hospital.
According to public health officials the Toronto residents drank carrot juice that has since tested positive for a botulism toxin.
The juice is said to be the same carrot juice which was recalled late in September and was one of the three brands recalled.
The juice, produced by Bolthouse Farms in Bakersfield, California was taken off North American store shelves after four cases of botulism in the United States were linked to toxic carrot juice.
One woman from Florida remains in hospital and has been unresponsive, since mid-September while three people in Georgia who suffered respiratory failure after drinking the carrot juice have been on ventilators for a month.
Botulism, though rare is a potentially fatal form of food poisoning and can cause general weakness, dizziness, double-vision and trouble with speaking or swallowing.
Difficulty in breathing, weakness of other muscles, abdominal distension and constipation may also be common symptoms and people experiencing these problems should seek immediate medical attention.
In severe cases, the paralysis can restrict breathing, forcing patients on to ventilators.
The Canadian public has been warned to avoid drinking three brands of carrot juice, Bolthouse Farms 100% Carrot Juice, Earthbound Farm Organic Carrot Juice and President's Choice Organics 100% Pure Carrot Juice.
Bolthouse Farms bottles the three brands and all are sold in one-litre and 450-millilitre containers.
Products with a "best by" date up to Nov. 11 have been recalled.
Consumers are advised to discard the products and the suggestion is that improper refrigeration has caused the problem and as carrot juice is low in acids, and bacteria will grow unless it's kept below 7 C.
This latest food scare comes after California-grown spinach tainted with a potentially deadly strain of E. coli is suspected to have caused three deaths in the U.S.and sickened people across the nation.