Federal health officials made a significant announcement on Wednesday, expanding an outbreak of infant botulism linked to recalled ByHeart baby formula to include all illnesses reported since the company began production in March 2022. The U.S. Food and Drug Administration stated that there is a possibility that contamination might have affected all ByHeart formula products ever made.
The outbreak now encompasses at least 51 infants in 19 states, with the new case definition including any infant exposed to ByHeart formula since the product’s release. The most recent illness was reported on December 1. Fortunately, no deaths have been reported in the outbreak, which was initially announced on November 8.
ByHeart, a New York-based manufacturer of organic infant formula, initiated a recall of all its products sold in the U.S. on November 11 after it was discovered that the formula could have been contaminated for several years. This revelation was distressing to parents like Andi Galindo, whose daughter was hospitalized with infant botulism after consuming the formula in December 2023.
The FDA conducted inspections at ByHeart plants in Iowa and Oregon, where the formula is produced and packaged. The company had previously reported contamination in samples tested by an independent laboratory. Inspection documents revealed a history of contamination issues, including a recall in 2022 and a warning letter from the FDA in 2023.
Infant botulism is a rare disease affecting fewer than 200 babies in the U.S. each year. It occurs when infants ingest botulism bacteria that produce toxins affecting the nervous system. Symptoms can include constipation, poor feeding, and difficulty swallowing. The sole treatment for infant botulism is BabyBIG, an IV medication made from the pooled blood plasma of adults immunized against botulism.
Families of infants affected by botulism after consuming ByHeart formula have filed lawsuits against the company, alleging negligence and seeking financial compensation for medical expenses and emotional distress. The risk to infants is ongoing, and families are advised not to use the recalled formula.
In conclusion, the expanded outbreak of infant botulism linked to ByHeart formula has raised concerns about food safety and accountability. Health officials continue to investigate the source of contamination and provide support to affected families.

