Key points
- This outbreak is over, but activities to determine the root cause of C. botulinum in ByHeart powdered infant formula continue.
- The outbreak included 28 confirmed cases and 20 probable cases.
- No new cases have been added since December 2025, and 3 previously reported cases of suspected infant botulism from 3 states have been excluded.
- All ByHeart Whole Nutrition infant formula products have been recalled. If you have any ByHeart formula, do not use it and throw it away.
