Some restaurants stop serving romaine lettuce

Some Canadian restaurant chains have stopped serving romaine lettuce due to a recent deadly outbreak of E. coli bacteria.

There were 41 cases of E. coli under investigation in total in New Brunswick, Nova Scotia, Newfoundland and Labrador, Ontario and Quebec as of Dec. 28, according to a statement from Public Health Agency of Canada.

One person has died and dozens more have fallen ill in five provinces, according to the Public Health Agency of Canada.

The agency linked the outbreak to romaine lettuce and is encouraging people to consider eating other varieties of lettuce instead.

Cara Operations, which operates Swiss Chalet, Montana's, East Side Mario's and other chains,  instructed its various chains with locations in those five provinces and P.E.I. to stop serving dishes with romaine lettuce.

Boston Pizza has also temporarily suspended the sale of all types of romaine lettuce at the pizza joint's locations in those provinces affected.

Sobeys is also pulling more than 300 romaine lettuce products from its shelves at stores across the country.