News

ATLANTA – December 10, 2025 – Today, the Centers for Disease Control and Prevention (CDC) released an update on the ongoing investigation of infant botulism cases linked to ByHeart infant formula. After assessing previously reported infant botulism cases in collaboration with the California Department of Public Health's Infant Botulism Treatment and Prevention Program (IBTPP), CDC investigators expanded the outbreak date range to include 10 cases dating back to December 2023. While we typically expect to see 150-180 individual cases of infant botulism annually, an outbreak of infant botulism is unprecedented," says Dr. Jennifer Cope, the chief of the Enteric Diseases Epidemiology Branch. Although this is the first ever outbreak of infant botulism, CDC experts used their rapid response skillset to act immediately to save the lives of infants in America and provide clear guidance to frightened parents during a health emergency."