Tests point to powdered whole milk as potential source in ByHeart infant botulism outbreak, AP reports
U.S. health officials say testing suggests organic powdered whole milk used in ByHeart infant formula may be linked to an infant botulism outbreak. The outbreak has sickened babies across multiple states, and the company expanded its recall beyond initial lots.
A major infant botulism investigation advances
Federal health officials investigating an infant botulism outbreak connected to ByHeart powdered infant formula say new testing indicates a key ingredient—powdered whole milk—could be involved. The outbreak has affected dozens of infants in the United States across many states, intensifying scrutiny of how ingredients are tested and how contamination risks are managed in infant nutrition supply chains.
According to reporting on the investigation, lab work detected the bacteria that cause botulism in unopened formula and in organic whole milk powder used in production. Officials said the testing is not described as final proof of the contamination pathway, but it represents meaningful progress toward identifying how the organism entered products intended for infants.
Recalls broaden as officials track exposure
ByHeart initially recalled specific lots, but later expanded the recall to cover all products made since the brand’s launch, reflecting the scale of the potential risk. Families were urged to check packaging and to stop using recalled formula. Health authorities have emphasized that infant botulism is rare but serious, and that quick identification of exposure sources is essential for preventing additional cases.
Experts cited in coverage said ingredient testing is a crucial line of defense and argued that raw material oversight can’t be treated as optional. Even if contamination originates upstream, the company responsible for the finished product remains central to how consumers experience the consequences—and therefore to how accountability is assessed.
What parents and caregivers should do
Public health guidance in such outbreaks generally centers on immediately discontinuing recalled products, using safe alternatives recommended by healthcare providers, and seeking medical attention if an infant shows symptoms consistent with botulism. Officials also note that outbreak findings can evolve as additional lab work and trace-back investigations continue.
Investigators are continuing to review production and ingredient pathways and to confirm how contamination may have occurred. While officials reported that no new illness cases had been identified in the most recent stretch of time covered, the investigation remains a reminder of how tightly regulated infant foods must be—and how quickly confidence can collapse when contamination is suspected.