New story in Health from Time: CDC Says 67 People Infected With E. coli After Eating Romaine Lettuce Sourced From One Region

Ahead of the Thanksgiving holiday, the Centers For Disease Control and Prevention (CDC) advises consumers, retailers and restaurants throw out any romaine lettuce that was grown in the Salinas, Calif. region after 67 cases of E. coli have been reported in 19 states, including six cases of kidney failure.

E. coli illnesses began in late September, according to the CDC, which is continuing to investigate if any other products can be linked to the outbreak. At least one case involves a 3-year-old child, and multiple cases involve children under 18 years old, CDC spokesperson Laura Whitlock tells TIME.

“If it’s romaine lettuce and it says it was grown in Salinas, do not eat it,” she says. “If you can’t tell where it was grown, do not eat it and throw it away.” Labels and stickers on the product will most often include where it was grown.

Wisconsin has seen 21 cases since September, the most in any state so far, and has reported 11 hospitalizations and two people diagnosed with hemolytic uremic syndrome, a type of kidney failure. Ohio has also reported 12 E. coli cases, and 17 other states have reported between one and four cases.

The Food and Drug Administration (FDA) is currently investigating what contaminated the lettuce with E. coli on the ground in Salinas, Whitlock says, including collecting samples of different water sources. Around this time in 2018, an E. coli outbreak was also linked to romaine lettuce. The outbreak ended in January, and 62 people were infected.

“You think about leafy greens, they’re grown in the ground, in soil, and the germs that we’re talking about here, especially E. coli, can be found pretty much anywhere in that environment,” Whitlock says. The FDA is investigating at what stage of lettuce harvesting that E. coli could have been introduced. “That’s a question a lot of us want answers to, because these seem to be repeated incidents.”

Last year’s outbreak also originated in northern and central California.

Most strains of E. coli are relatively harmless, Brian Katzowitz, a health communications specialist at the CDC, tells TIME. But this particular strain of E. coli 0157:H7 is a type that can cause more severe illness, including bloody diarrhea and extreme vomiting. 78% of people in this outbreak so far have had to be hospitalized, which “is significantly higher than what we would normally expect,” Katzowitz says. “That’s another reason we’re concerned about this.”

The CDC expects the number of E. coli cases to rise as state partners continue investigating and past incidents come to light. “[Investigators are] working hard even though it’s Thanksgiving,” Whitlock says. “That work is not stopping for the holiday.”