A salmonella outbreak in the US, linked to recalled onions, has spread to 47 states. Cases and hospitalizations have increased. On Tuesday, the Food & Drug Administration said that it is analyzing samples collected at Thomson International of Bakersfield, California, which has recalled all red, white, yellow and sweet yellow onions shipped to all 50 states and the District of Columbia from May 1 to Aug. 1.

In its updat Tuesday, the Centers for Disease Control and Prevention said the number of reported cases of salmonella newport illnesses had grown to 869 cases, with 116 hospitalizations in 47 states (only Oklahoma, Louisiana, and Vermont have not had cases). No deaths have been reported.

The initial recall involved bulk onions distributed to wholesalers, restaurants, and retail stores in all 50 states under brand names such as Thomson Premium, TLC Thomson International, Kroger, Food Lion, and onions 52.