Preliminary tests showed that ByHeart baby formula contained the type of bacteria that produces the toxin linked to a botulism outbreak, California health officials said.

The outbreak has sickened at least 13 infants in 10 states, including Pennsylvania and New Jersey. No deaths have been reported.

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“Consumers in possession of this product should stop using it immediately,” the California Department of Public Health said in a statement late Saturday.

More tests of ByHeart Whole Nutrition Infant Formula are pending as state and federal health officials investigate the outbreak that started in mid-August. The New York-based company this weekend recalled two lots of the powdered product.

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