The Illinois company says it found no trace of the bacteria tied to the death of a Missouri baby.
Preliminary hospital tests indicated 10-day-old Avery Cornett died last week from a rare infection caused by bacteria.
The source of the bacteria has not been determined, but it can be found in powdered formula.
Avery had consumed Enfamil newborn formula.
National retailers, including Walmart and Walgreens, have since pulled a batch of the powdered infant formula from their shelves.