Federal and state health officials are investigating 13 cases in 10 U.S. states of infant botulism linked to baby formula that is being recalled.

The Food and Drug Administration said ByHeart Inc. agreed to begin recalling two lots of the company’s Whole Nutrition Infant Formula. All 13 infants were hospitalized after consuming formula from the two lots. No deaths were reported.

The formula is sold online and through major retailers. Infant botulism is caused by a bacterium that produces toxins in the large intestine. The cases occurred in Arizona, California, Illinois, Minnesota, New Jersey, Oregon, Pennsylvania, Rhode Island, Texas and Washington.