Denmark solves 4 of 10 recent Listeria outbreaks

Nearly 200 Listeria infections have been reported in Denmark over a 3-year period with only four of 10 outbreaks solved.

Data from the Statens Serum Institut shows 199 cases of invasive infection with Listeria monocytogenes between 2023 and 2025. There were 66 cases on average per year with a range of 54 to 84, which corresponds to an incidence of 1.1 per 100,000 inhabitants in Denmark per year.