Nearly a hundred people have become ill from salmonella linked to raw chicken.
The Centers for Disease Control (CDC) says the outbreak has been reported in 29 states, including Indiana and Illinois.
So far 21 people had to be hospitalized, but no deaths have been reported.
The CDC says this particular strain is resistant to several of the antibiotics normally used to treat the infection.
It has been found in live chickens and raw chicken products, but a single, common supplier has *not* been identified.
The health officials are urging consumers to cook chicken thoroughly and to wash your hands *before* and *after* you handle food.
Salmonella normally causes mild upset stomach, but it can be serious in the elderly, young children and those with compromised immune systems.