Soft cheeses, frozen breakfast foods, smoked salmon and other products have been recalled for potential listeria contaminations in the last month.

Yu Shang Food has expanded its recall of poultry products and ready-to-eat meats due to potential Listeria monocytogenes contamination.

The infant killed was a twin whose sibling also died, but whose death could not be linked to listeria. Their pregnant mother was also sick, but recovered, the CDC said.