Health officials are currently scrutinizing more than 30 cases of infant botulism that have recently been traced back to ByHeart baby formula. This outbreak, which has affected at least 31 infants across 15 states, follows a troubling trend where parents of children who fell ill months before the current investigation are demanding answers.
Officials in California confirmed that between November 2024 and June 2025, six infants treated for botulism had consumed ByHeart formula, well in advance of the present wave of cases. In a recent statement, the California Department of Public Health stated there was not enough evidence to immediately suspect a common source back then.
Despite current efforts, officials maintain they cannot definitively link pre-August 1 cases to the ongoing outbreak. Parents sharing their experiences have heightened concerns over the safety of ByHeart products, especially after recalling all its products nationwide on November 11 due to the rising botulism cases.
Amidst growing anxiety, parents like Amy Mazziotti and Katie Connolly are voicing their frustrations. Mazziotti’s son was treated for botulism after consuming the formula in March, while Connolly’s daughter experienced severe symptoms in April. Both mothers now believe the connection between their children’s illnesses and ByHeart formula is too significant to dismiss.
Federal health officials overseeing investigations are aware of earlier cases, but assert their primary focus is on understanding this recent and unusual spike since August. Dr. Jennifer Cope from the CDC acknowledged that while these earlier cases may eventually need to be considered, definitive linking remains difficult due to the time elapsed and lack of product lot number records from parents.
With botulism typically resulting from environmental spores or contaminated honey, health authorities are keen on tracing the source. However, the challenges faced in correlating past cases to the current outbreak are leaving many parents feeling overlooked and seeking clarity.
Experts argue that the previous cases should be included in the investigation, expressing concern for the traumatic impact this outbreak has had on families who assumed the formula was safe. Several parents are left grappling with the aftereffects of their infants’ illnesses, anxious for comprehensive answers.
As Health officials continue their assessments, the poignant testimonials from affected parents add a critical layer to the narrative, driving home the urgency for accountability and safety in infant nutrition.



















