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 .

The warning advises people not to use ByHeart Whole Nutrition Infant Formula with lot numbers 206VABP/251131P2 or 206VABP/251261P2, both with a use by date of Dec. 1, 2026. The numbers can be found on the bottom on the can.

ByHeart agreed to voluntarily recall the products, which were sold online and at major retailers nationwide. The

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