On 17 February 2022, the United Kingdom (UK) reported a cluster of cases with monophasic Salmonella Typhimurium sequence type 34 infection. As of 18 May 2022, 324 cases had been reported in 12 EU/EEA countries and the UK, including two distinct strains.
On 18 May 2022, ECDC and EFSA published an update of the rapid outbreak assessment on a multi-country outbreak of monophasic Salmonella Typhimurium linked to chocolate products made at a factory in Arlon, Belgium.