Between 2012 and 2024, a prolonged outbreak of 73 cases of L. monocytogenes ST173 infections (‘My2’ -cluster) has been ongoing in Belgium (5), Czechia (1), Germany (39), Finland (2), Italy (1), the Netherlands (20), and the United Kingdom (UK) (5). Fourteen deaths have been recorded as associated with this outbreak. Males aged over 60 years represent the most affected population group. Most patients with available information from case interviews report consuming various fish products before illness. Among 73 cases, an ongoing ‘My2’ sub-cluster 1 was identified with 38 cases reported in six EU countries and the UK.
