Federal officials are investigating a new outbreak of Listeria infections.

Although they have not yet identified a source, investigators from the Food and Drug Administration have found 26 patients. The FDA has not reported where the patients live or their ages.

The investigation appears to be in its beginning stages because the FDA has not yet begun traceback efforts or sampling or on-site inspections. The outbreak notice was first posted on Jan. 24.

Other FDA investigations into foodborne outbreaks are ongoing.

Three patients have been identified in a Listeria outbreak of unknown origin. The FDA has begun traceback, testing and on-site inspections but has not reported what food is being tested or what location is being inspected. The outbreak notice was first posted on Dec. 6, 2023.

Another outbreak of infections from Listeria is ongoing. It has been traced to peaches and led to the recall of peaches, nectarines and plums from various stores, including Food Lion, Walmart, Sam’s Club, Albertsons, Safeway, Sprouts Farmers Markets and H.E.Butt Grocery. The recall was initiated by HMC Farms, which recalled fruit sold in retail stores from May 1, 2022, through November 15, 2022, and from May 1, 2023 through November 15, 2023.

In October 2023 a sample of peaches was found to be contaminated with the outbreak strain of Listeria. In total, 11 people have been confirmed in the outbreak with 10 requiring hospitalization and one having died. The FDA and the Centers for Disease Control and Prevention continue to investigate the outbreak, which is categorized as ongoing.

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