An outbreak of infant botulism, a rare but serious illness caused by toxins that attack the nervous system, is causing alarm among regulators and parents in the U.S. It's prompting an investigation and a nationwide recall of ByHeart Whole Nutrition Infant Formula. Stephanie Sy reports. PBS News is supported by - https://www.pbs.org/newshour/about/funders. Hosted on Acast. See acast.com/privacy