Fifteen infants, including one in Pennsylvania and one in New Jersey, have ben hospitalized during a botulism outbreak linked to ByHeart Whole Nutrition Infant Formula.

ByHeart voluntarily recalled all of its baby formula products Tuesday, an expansion of an initial recall, issued last weekend, that included two batches of formula. Infant botulism affects babies' digestive and nervous systems and can be fatal. No infant deaths have been reported. MORE: Hormone therapy treatments for menopause no longer will carry warnings on heart disease, cancer

"The safety and well-being of every infant who uses our formula is, and always will be, our highest priority," ByHeart President Mia Funt said in a statement Tuesday. "This nationwide recall reflects our commitment to protecting

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