Infectious Diseases 2020

Infectious Diseases 2020

Scotland: Salmonella annual surveillance report - 2019

12 February, 2020

During 2019, there were 756 isolates of human non-typhoidal Salmonella reported to Health Protection Scotland. This was in line with the 751 cases reported in 2018, which was a decrease on the 840 cases reported in 2017. Most isolates were reported during the summer months. There is an additional peak later in October which co-incides with the mid-term school break. This trend is consisent with previous years.
The two most commonly reported serotypes were Salmonella Enteritidis and Salmonella Typhimurium which accounted for 58% of all Salmonella isolates reported in 2019.  S. Enteritidis remains the most common serotype, with 297 (40%) reports. This was an increase of 8% on the 275 reported in 2018. Reports of Salmonella Typhimurium decreased very slightly in 2019, with 135 (18%) reports compared to 139 in 2018 - and compared to183 reported in 2017. 
The overall rate of Salmonella infection was 13.9 per 100,000 population, the same as that observed in 2018. 
The rates of infection of Salmonella vary across the population, with overall higher rates observed in children under 5 years of age compared with older children. The overall rates were slightly higher in females than males (14.1 compared to 13.7 per 100,000 population).