Sixty-seven people have been infected across 19 states in an E. coli outbreak that is linked to romaine lettuce , the Centers for Disease Control and Prevention said.
Officials are investigating lettuce that was harvested from Salinas, California, the CDC said, warning consumers not to eat it and retailers not to sell any from that area.
That includes "whole heads of romaine, organic romaine, hearts of romaine, romaine in salad wraps, and packages of precut lettuce and salad mixes which contain romaine, including baby romaine, spring mix, and Caesar salad," the agency said Tuesday.
"Look for a label showing where the romaine lettuce was grown. It may be printed on the package or on a sticker," the CDC said. "If the label says 'grown in Salinas' (whether alone or with the name of another location), don't eat it. Throw it away."
And if the lettuce doesn't have labeling information on it, don't eat it, said Frank Yiannas, FDA's deputy commissioner for food policy and response.
"Restaurants and retailers should not serve or sell romaine lettuce if they cannot confirm it is from outside Salinas," he said.
Of the people who have been infected -- who range from 3 to 89 years old -- 39 have been hospitalized, the agency said. Six of them have developed a type of kidney failure.
No deaths have been reported.