The advisory from the Centers for Disease Control and Prevention follows 32 confirmed cases of the bacteria in 11 states and Canada.
Of those cases, 13 people have been hospitalized, including one person who suffered a type of kidney failure. No deaths have been reported.
“Consumers who have any type of romaine lettuce in their home should not eat it and should throw it away, even if some of it was eaten and no one has gotten sick,” the CDC said.
Restaurants are also urged not to serve the produce, and people are encouraged to avoid bagged, chopped and mixed lettuce that contains romaine. If the type of lettuce is not known, the CDC advises to throw it away out of caution.
The latest illnesses linked to the lettuce began between Oct. 8 and Oct. 31. As of Tuesday, the grower, supplier, distributor and brand of the infected lettuce is not known, the CDC said.
The advisory is not linked to another, recent multistate outbreak of the same bacteria in romaine lettuce that sickened at least 53 people across 16 states. Back in April, the CDC similarly urged the public to avoid eating the produce amid that scare.
This is a developing story. Check back for updates.