Where People Got Sick: Botulism Infant Formula Outbreak, November 2025 | Botulism | CDC
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Nov. 14, 2025
CDC, public health officials in several states, the California Department of Public Health Infant Botulism Treatment and Prevention Program, and the U.S. Food and Drug Administration, are investigating a multistate outbreak of infant botulism linked to infant formula. Infant botulism happens when a baby swallows Clostridium botulinum spores that grow in the gut and make toxin. Infant botulism often starts with constipation but is usually first noticed as difficulty feeding (sucking and swallowing), a weak and altered cry, and lack of head control.
Where sick people live
This map shows where the 23 infants in this infant botulism outbreak lived.
Nov. 14, 2025
Content Source:
National Center for Emerging and Zoonotic Infectious Diseases (NCEZID)
