Human Salmonella Isolates, 2009 No. 11, November
Wednesday 22nd March 2023
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Summary
The number of isolates (n = 71) received this month showed a decrease in comparison to the numbers received in November 2008 (n = 110). S. Typhimurium phage type 160 accounted for 18% of total serotypes this month in contrast to 9% in November 2008. Uncommon New Zealand serotypes identified this month included S. Brancaster (1 human isolate since 2002) and S. Waycross (2 human isolates since 2002). Salmonella Yoruba and Molade were isolated from human cases for the first time in New Zealand; S. Yoruba has been previously isolated from poultry environment. An outbreak of Salmonella Typhimurium phage type 12a variant 09 was confirmed this month by the Enteric Reference Laboratory (ERL). Preliminary epidemiological investigation indicates possible link to travel to Australia. Information received from the Adelaide and Melbourne laboratories indicate that this phage type is similar to the phage type 108, also known as 170, commonly found in Australia. The Australian laboratories have agreed to send recent isolates of phage type 108/170 for further characterisation by ERL. Note: Click on the document links below to open. These documents are in PDF format. You will need to download the free Adobe Acrobat Reader to view them.
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