A cluster of Salmonella Typhimurium phage type U307 associated with a restaurant.

Corresponding author: Dr. Helen E Quinn, Epidemiology Registrar, Communicable Diseases Unit, Queensland Health, PO Box 48, Brisbane, QLD 4001. Telephone: +61 7 3234 1326. Facsimile: +61 7 3234 0057. Email: [email protected] On 8 May 2003 the Queensland OzFoodNet epidemiologist was notifi ed of a cluster of six cases of Salmonella Typhimurium phage type U307. A further nine cases were identifi ed the following day. S. Typhimurium phage type U307 is rare in Australia. Only 133 isolations from human sources have occurred since 1996 (National Enteric Pathogens Surveillance Scheme data) and there has only been one recorded outbreak in Australia. Hypothesis generating interviews were conducted, with three cases identifi ed as having eaten roast pork at a particular Sunshine Coast restaurant 1-2 days prior to onset of illness, as a common exposure.