Just two days before Thanksgiving, an unusually broad warning that romaine lettuce might be contaminated by a dangerous type of E. coli bacteria was issued by American Centers for Disease Control and Prevention (CDC). E. coli is a bacteria found in the intestines of animals, and it can contaminate a wide range of agricultural products. People infected with E. coli usually recover in a couple of days without any complications.
However, the recent outbreaks are caused by an E. coli strain known as O157:H7, which produces a Shiga toxin that may lead to kidney failure. The CDC told consumers to throw away any romaine lettuce they have purchased. Restaurants are advised not to serve it, store not sell it and consumers not buy it, no matter where or when the lettuce was grown. People are also advised to sanitize their refrigerator drawers if they store lettuce inside.