At least five families say their babies were treated for infant botulism after consuming ByHeart formula months before a current outbreak was detected. More than 30 babies have been treated for the rare and life-threatening disease in an outbreak that started in August. But parents have reported that babies who drank the formula may have been sickened as early as December 2024. Federal health officials are aware of earlier cases but have not included them or expanded the definition of the outbreak. ByHeart recalled all of its products nationwide on Nov. 11.
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