Federal authorities are warning consumers not to eat any romaine lettuce after an E. coli outbreak has infected 32 people across the U.S.

The Centers for Disease Control and Prevention issued a food-safety alert Tuesday afternoon that warns against people eating, businesses selling or restaurants serving any romaine.

Signs on the cash registers at Jason's Deli on Nov. 20, 2018 in Cedar Hill, Texas tells customers they are not serving Romaine lettuce. (Irwin Thompson/Staff Photographer) (Irwin Thompson)

"CDC is advising that consumers do not eat any romaine lettuce because no common grower, supplier, distributor, or brand of romaine lettuce has been identified,” the CDC alert stated.

The alert includes all parts of the lettuce and any romaine found in mixes. People who have romaine lettuce in their homes should dispose of it, even it was partially eaten and no one became sick.

Refrigerators where romaine was stored should be sanitized, according to the CDC.

The 32 people who have fallen ill in the U.S. live in 11 states, and no one has died from the outbreak. No one has been reported ill in Texas.

Eighteen people have been infected in Canada.

People presenting symptoms of infection, which include diarrhea, severe cramps and vomiting, should seek medical help and report their illness.