Listeria illness linked to ready-to-eat meat and poultry products has caused the death of an infant in California, according to a statement from the U.S. Centers for Disease Control and Prevention. Cases have also been reported in Illinois,

As of Friday, 11 people have been infected in four states in a listeria outbreak linked to Yu Shang Food ready-to-eat meat and poultry products, the CDC said.

The CDC said twin infants in California died, but only one of the two deaths has been linked to the outbreak. Yu Shang Food has recalled products that may be contaminated.