Multistate Outbreak of Infant Botulism Under Investigation: 13 Infants from 10 States Linked to Infant Formula

In collaboration with the U.S. Food & Drug Administration (FDA), the Centers for Disease Control and Prevention (CDC), the California Department of Public Health (CDPH) Infant Botulism Treatment & Prevention Program (IBTPP), and state and local partners, officials are investigating a multistate outbreak of infant botulism linked to powdered infant formula . As of November 8, 2025, 13 infants with suspected or confirmed infant botulism from 10 states have been identified.

What We Know So Far

Public health agencies have issued joint alerts indicating that all 13 identified infants consumed the powdered infant formula brand ByHeart Whole Nutrition prior to onset of illness. On Nov

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