Human Salmonella isolates, 2020 No.10, October

Monday 19th April 2021


Human Salmonella isolates, 2020 No.10, October

The number of isolates (n=63) confirmed this month showed an increase in comparison to the number of isolates confirmed in October 2019 (n=118). Salmonella Bovismorbificans (3.4% in October 2019 vs 41.3% in October 2020) was the most common serotype confirmed this month.
Increase in notifications of Salmonella Bovismorbificans (Source: EpiSurv 1030 hours 04 November 2020, Ministry for Primary Industries)

  • 24 cases of Salmonella Bovismorbificans were reported during October 2020. An increase compared to the same period in previous years (4 cases in 2019 and 7 cases in 2018).
  • The cases were geographically dispersed throughout the North Island, mostly in urban centres, and the majority were of Māori ethnicity (85%, 17/20) and were over 40 years old (79%, 19/24). Two-thirds were female. 9 cases (53%, 9/17) had been hospitalised.
  • This serotype has been increasingly isolated from sick cattle since 2015 with 208 isolates confirmed to date in 2020. It has also been detected in canine (10), feline (6) and avian (1) sources this year.

Due to COVID-19 effect on overseas travel and habits of the community post lockdown, there has been a downturn in the number of Salmonella samples.

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Human Salmonella isolates, 2020 No.10, October

 

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Human Salmonella isolates, 2020 No.10, October

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