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Following an increase in the number of reported human infections with Salmonella entrica serovar Stanley in some EU countries, the European Commission requested a risk assessment from ECDC.

A multi-country outbreak of Salmonella Enteritidis phage type (PT) 8 with multiple locus variable-number tandem repeat analysis (MLVA) profile 2-9-7-3-2 has been ongoing in the EU/EEA since at least July 2015. Since May 2016, 16 confirmed and 132 probable cases have been reported to ECDC by six EU/EEA countries.

This report assesses the risk associated with this multi-country outbreak of Salmonella Enteritidis PT 8 associated with two MLVA types, initially confirmed and delineated by whole genome sequencing methods.​

This document provides an assessment of the public health risk associated with a multi-country outbreak of Salmonella Enteritidis, which is epidemiologically and microbiologically linked to contaminated eggs from Poland, and can be characterised by at least six MLVA profiles and four clusters defined by WGS (PHE SNP analysis).