More than three dozen babies have been sickened in an infant botulism outbreak tied to contaminated formula , federal health officials say.

The Food and Drug Administration on Wednesday reported 37 cases of confirmed or suspected illness in babies who consumed ByHeart formula since August . The most recent case was reported on Nov. 19.

No deaths have been reported in the outbreak, which was announced Nov. 8.

ByHeart, a New York-based manufacturer of organic infant formula, recalled all its products sold in the U.S. on Nov. 11.

FDA inspectors have been to the company’s infant formula production plants in Allerton, Iowa; and Portland, Oregon.

The company, which accounts for about 1% of the U.S. infant formula market, had been selling about 200,000 cans of the product each month.

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