Infant botulism cases linked to ByHeart baby formula have doubled to at least 31 since the company’s recall expansion, with infants hospitalized across 15 states. Symptoms can include poor feeding and paralysis, and while no deaths have occurred, lawsuits have been filed against ByHeart for negligence. The FDA warns that recalled products remain on store shelves, and testing of remaining formula samples is ongoing. ByHeart expresses sympathy for affected families and is committed to transparency regarding the situation.