Nasjonalt folkehelseinstituttet (the Norwegian Institute of Public Health, NIPH) has recently completed the investigation of a nationwide outbreak of Salmonella Kedougou infections. The outbreak was detected by the reference laboratory at NIPH on 18 May 2006 after verifying six cases without travel history during the previous month. On 22 May, an urgent enquiry was sent out through Enter-net, the international surveillance network for the enteric infections Salmonella and VTEC O157 (http://www.hpa.org.uk/hpa/inter/enter-net_menu.htm). Other participating countries indicated that they had no cases, suggesting a source in a food product sold mainly in Norway.