Human Salmonella Isolates, 2010 No. 10, October
Wednesday 22nd March 2023
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Summary
The number of isolates (n=110) showed an increase in comparison with October 2009 (n = 84). Salmonella Typhimurium phage type 160 (15 in October 2010, 12 in October 2009) was the predominant serotype this month. Uncommon New Zealand serotypes identified this month included S. Enteritidis phage type 15 (1 previous human isolate confirmed in 2008 from a 38y male returning from Africa) and S. Papuana (6 human isolates since 2000, 2 of which had recently travelled overseas). For the second consecutive year, human isolates of S. Brandenburg from the endemic area of the South Island peaked in October. Salmonella Brandenburg accounted for 11% of total serotypes this month in contrast to 15% in October 2009.
Salmonella Typhimurium phage type 120 was confirmed this month in the Nelson-Marlborough region. This isolate, known to show resistance to multiple antimicrobials overseas, was referred to the ESR Antibiotic Reference Laboratory for antimicrobial susceptibility testing.
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