Human Salmonella isolates, 2022 No.09, September

The number of isolates (n=57) confirmed this month showed an increase in comparison to the number of isolates confirmed in September 2021 (n=40). Salmonella Typhimurium ST568 (12.5% in September 2021 vs. 24.6% in September 2022) was the most common serotype confirmed this month. Uncommon serotypes confirmed this month were Salmonella Bredeney (13 human cases since it was first confirmed in New Zealand in 1991) and Salmonella Minnesota (3 human cases since it was first confirmed in New Zealand in 1998).