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CDC Declares End to ByHeart Infant Formula Botulism Outbreak

2/26/2026

Summary

Story summary

The U.S. Centers for Disease Control and Prevention (CDC) declared the infant botulism outbreak linked to ByHeart powdered formula over, with no new cases since December.
The outbreak affected 48 infants, including 28 confirmed and 20 probable cases, and was the first botulism outbreak linked to infant formula worldwide.
All ByHeart products were recalled as investigations continue to determine the root cause, initially linked to whole-milk powder.

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Story summary

The U.S. Centers for Disease Control and Prevention (CDC) declared the infant botulism outbreak linked to ByHeart powdered formula over, with no new cases since December.
The outbreak affected 48 infants, including 28 confirmed and 20 probable cases, and was the first botulism outbreak linked to infant formula worldwide.
All ByHeart products were recalled as investigations continue to determine the root cause, initially linked to whole-milk powder.