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Non-human salmonella isolates 2019

31 December 2019

Food environmental testing
Consumer safety
Animal testing

Please note: As of 1 July 2025, the New Zealand Institute for Public Health and Forensic Science (PHF Science) is the new name for the Institute of Environmental Science and Research (ESR). Research and reports published prior to this date may reference the organisation’s former name.

Click to download the isolates data below, or scroll to read the annual summary

Annual summary 2019

The Enteric Reference Laboratory confirmed 926 non-human Salmonella isolates in 2019 compared with 848 in 2018.

There was a decrease in the number of:

  • S. Agona isolates (18 in 2018 vs. 9 in 2019);
  • S. Ruiru isolates (16 in 2018 vs. 4 in 2019);
  • S. Stanley Meal isolates (14 in 2018 vs. 1 in 2019);
  • S. Typhimurium phage type 42 (18 in 2018 vs. 4 in 2019);
  • S. Typhimurium phage type 101 (62 in 2018 vs. 47 in 2019);

There was an increase in the number of:

  • S. Typhimurium phage type 108/170 (3 in 2018 vs. 26 in 2019);
  • S. Typhimurium phage type 23 (19 in 2018 vs. 27 in 2019);
  • S. Brandenburg isolates (106 in 2018 vs. 133 in 2019);

From 1st November 2019, all phage typing ceased. From this time, serotypes that were historically phage typed – Typhimurium and Enteritidis have all been fine typed using whole genome sequencing upon request.