As of December 3, 2025, the Food and Drug Administration, Centers for Disease Control and Prevention, and several state health authorities have reported a total of 39 suspected or confirmed cases of infant botulism across 18 states, attributed to ByHeart baby formula sold in retail stores. Preliminary testing in California found multiple lots of formula contaminated with Clostridium botulinum type A. The 39 infants have been hospitalized, and no deaths have been reported. Onset of …
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