The Danish State Serum Institute (SSI) reportedly confirmed on Monday that 15 people have now died from the ongoing Listeria monocytogenes outbreak, with the total number of those sickened at 38. The outbreak has been traced to a spiced meat roll known as “rullepølse,” and 30 products, including salami and hot dogs, have been recalled and the producer shut down. Consumers in Denmark have also been warned of a Listeria risk connected to halibut from a company called Hjerting Laks that was sold in Netto, Irma and Føtex stores. Anyone with halibut in their freezers purchased from that company before June 1 was advised to dispose of it or return it to the store. Symptoms of Listeria infection include fever, nausea, diarrhea and vomiting. Most patients begin feeling symptoms anywhere from seven to 21 days after infection.