Another leafy greens shipper — the fourth this month — has recalled a product over bacterial contamination fears.

And the number of people sickened in an earlier outbreak has risen to 28.

Salinas, Calif.-based Organicgirl Produce LLC has recalled 336 cases of its 10-ounce baby spinach packs with a use-by date of May 22, according to a May 27 news release posted on the Food and Drug Administration’s Web site.

The recall was issued after a package of the company’s baby spinach tested positive for salmonella in a random sample test conducted by a third-party laboratory for FDA.

No illnesses have been connected with the recall.

The bags, labeled with the product code 11A061167, were sold in Alabama, North Carolina, Oregon, Wisconsin, Arizona and California.

Organicgirl is a subsidiary of Salinas-based NewStar Fresh Foods LLC, which is a member of the California Leafy Greens Marketing Agreement.

The Organicgirl recall is the fourth recall of a leafy green product this month.

On May 24, Salinas, Calif.-based Fresh Express recalled two dozen of its salads that contain romaine after FDA found a positive test for salmonella. No illnesses have been traced to that outbreak.

On May 21, Maywood, Calif.-based Caldwell Fresh Foods recalled alfalfa sprouts. As of June 1, 28 people in 10 states had been sickened with the same strain of salmonella found in sprouts shipped by Caldwell, according to the Centers for Disease Control and Prevention.

And on May 6, Sidney, Ohio-based  Freshway Foods recalled romaine products over E.coli fears. Up to 30 people may have become sick from eating those contaminated products.