The Minnesota Department of Health is warning consumers that alfalfa sprouts produced by a River Falls, Wis., company could have E. coli.

Routine monitoring by the department found seven people who had contact with alfalfa sprouts produced by Jack & the Green Sprouts were infected with the same E. coli bacteria in January and February, the department said. Those infected had contact with the sprouts in a variety of locations, including grocery or cooperative stores, restaurants, salad bars and commercial food service.

Of the seven, four are Twin Cities metro residents, and three live in greater Minnesota. Two were hospitalized, and all have recovered.

There were also two E. coli cases in Wisconsin that are considered part this outbreak, and at least one of the infected had contact with alfalfa sprouts from the company. Neither case required hospitalization, the department said.

The alfalfa sprouts may have been sold in a plastic clam shell with a brightly colored round label. They may be mixed with other sprout varieties.

Health officials say retailers and restaurants should not sell or serve the company’s alfalfa sprouts, and consumers should not eat them at this time. There is currently no evidence that other products produced by Jack & the Green Sprouts are contaminated.

Joe Mahoney, owner of Jack & The Green Sprouts, said Wednesday that his company tests every batch of its sprouts and did not find any E. coli, but “out of an abundance of precaution” the company will be recalling all of its alfalfa sprouts and alfalfa onion sprouts.

“We follow all our guidelines and all of our tests showed negative,” Mahoney said.

The department of health said the extent of the contamination is not known at this time. The U.S. Food and Drug Administration is working with state officials to determine the source of the outbreak.