(CNN) — Boar’s Head will close the Virginia plant that produced deli meat tied to a deadly listeria outbreak, the company said on Friday.

The move is part of several changes made following what it called a “dark moment in our company’s history.” Boar’s Head said it will permanently discontinue sales of liverwurst after an investigation found its production process was the root cause of the listeria contamination. It will also implement a companywide food safety program, appoint a new food safety officer and bring on food safety council made up of independent industry experts, including former officials from the US Department of Agriculture and Food and Drug Administration.

“We remain steadfast in our commitment to our customers and to the safety and quality of our products,” the company said in a letter to consumers. “We are determined to learn from this experience and emerge stronger.”

The Boar’s Head plant in Jarratt, Virginia, has not been operational since July, when the liverwurst recall was first announced and then expanded to include all products made at the plant.

US Department of Agriculture’s Food Safety Inspection Service reports from the facility have described insects, mold, “blood in puddles on the floor” and a “rancid smell in the cooler” at various points since 2022. Another report from 2022 cited “major deficiencies” with the plant’s physical conditions — rusty equipment, peeling and flaking paint, loose caulk, holes in walls, product residue on surfaces and dripping condensation — that posed an “imminent threat.” The reports said plant management was notified and directed to take corrective action.

But a USDA suspension notice for the Virginia facility shared by Boar’s Head on Friday describes “inadequate” controls and sanitation that allowed equipment and employees to move throughout the facility, potentially spreading bacteria.

“Given the seriousness of the outbreak, and the fact that it originated at Jarratt, we have made the difficult decision to indefinitely close this location, which has not been operational since late July 2024,” the company said in the letter. “It pains us to impact the livelihoods of hundreds of hard-working employees. We do not take lightly our responsibility as one of the area’s largest employers. But, under these circumstances, we feel that a plant closure is the most prudent course.”

FSIS said this week that its investigation would include a “holistic look at Boar’s Head establishments across the country” and consideration of lessons that could be “more broadly applied to ready-to-eat meat and poultry facilities.”

The US Centers for Disease Control and Prevention says 57 people have been hospitalized in 18 states in connection with the Boar’s Head listeria outbreak, and nine people have died. The agency called it the largest listeria outbreak since one linked to cantaloupe in 2011.

The actual number of illnesses is probably higher than what’s been reported because some people may have had milder illnesses and were not tested for listeria, the CDC said. The agency continues to advise consumers to check their kitchens for recalled products, which have “EST. 12612” or “P-12612” inside the USDA mark of inspection on labels and have sell-by dates into October 2024.

Listeria bacteria causes listeriosis, the third leading cause of death from foodborne illness in the United States. Symptoms can include fever, muscle aches and fatigue. An infection can also cause a stiff neck, a headache, confusion or seizures.

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