The Food and Drug Administration (FDA) continues to investigate the recent multistate outbreak of infant botulism stemming from the contamination of a powdered infant formula which sent at least 13 infants to hospitals, including two in Illinois. No deaths have been reported to date. While rare, infant botulism is a serious illness. Symptoms may include lethargy or drowsiness, muscle weakness, and constipation.  All affected children were reported to have consumed ByHeart powdered infant formula, which has now been recalled as part of the ongoing investigation. ByHeart Whole Nutrition Infant Formula accounts for less than 1 percent of all infant formula sales in the country, according to the FDA. ByHeart formula is not one of the formula options provided to Illinois WIC families. CDPH is happy to help mothers who qualify for WIC and are looking for alternative options to ByHeart formula. Check out CDPH’s WIC website, chicago.gov/WIC for contact information and other resources.