According to a Food Safety Alert issued Tuesday by the Centers for Disease Control and Prevention, officials are investigating a multi-state outbreak of E. coli related to the lettuce. Six of those individuals were hospitalized and one individual suffered from hemolytic-uremic syndrome (HUS), which is a severe complication that can result from an E. coli infection. No deaths have so far been reported.
Illnesses started in October.
This is a different strain from the one responsible for another romaine lettuce scare in the US earlier this year, when the vegetable caused E. coli infections in more than 200 people in 30 states, killing five people. The agency said even if you have already eaten some of the lettuce in your home and have not gotten sick, you should still throw it away.
This investigation is ongoing, and CDC will provide more information as it becomes available. The advice includes all types of romaine lettuce including salad mixes that contain romaine.
"If you do not know if the lettuce is romaine or whether a salad mix contains romaine, do not eat it and throw it away", the CDC says.
If you're not sure whether your bagged lettuce includes romaine, chuck it out, the CDC says. Follow these five steps to clean your refrigerator. People in Canada are also being warned to stay away from romaine lettuce. If there is fever, it is usually not very high (less than 101 degrees Fahrenheit/less than 38.5 degrees Celsius). Most people recover within a week, but some illnesses can last longer and be more severe. Most people get better within 5 to 7 days.