An outbreak of Salmonella Typhimurium DT191a associated with reptile feeder mice

K. S. Harker*, C. Lane, E. De Pinna, G. K. Adak

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    39 Citations (Scopus)


    In December 2008 an increase of tetracycline-resistant Salmonella Typhimurium definitive phage-type 191a (DT191a) was identified in England and Wales by the reference laboratory. This was confirmed to have a phage-typing pattern that had not previously been seen. Strong statistical evidence for an association between illness and keeping reptiles was demonstrated by a matched case-case study (mOR 16·82, 95% CI 2·78∞). Questionnaires revealed an association with frozen reptile feeder mice, and mice representing 80% of the UK supply lines were tested for the presence of Salmonella. DT191a was found in three pools of sampled mice, which were traced back to a single supplier in the USA. Imports from this supplier were halted, and tighter regulations are now in place. A leaflet detailing how to prevent contracting Salmonella from pet reptiles has been published as well as updated advice on the Health Protection Agency's website.

    Original languageEnglish
    Pages (from-to)1254-1261
    Number of pages8
    JournalEpidemiology and Infection
    Issue number8
    Publication statusPublished - Aug 2011


    • Epidemiology
    • Salmonella Typhimurium
    • food poisoning
    • outbreaks


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