SAN FRANCISCO — Health experts warned against feeding specific lots of ByHeart baby formula to children as they opened a multistate botulism investigation Saturday.

At least 13 infants have been hospitalized in 10 different states — Arizona, California, Illinois, Minnesota, New Jersey, Oregon, Pennsylvania, Rhode Island, Texas and Washington — after consuming the formula between August and November, according to the U.S. Food and Drug Administration .

No deaths have been reported at this time and the last documented illness was in November. ByHeart says they were notified Friday about 83 cases of infant botulism reported nationwide since August. An investigation into the outbreak is underway.

The warning advises people not to use ByHeart Whole Nutrition Infant Formula with lot numb

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