Communicable Disease Control Branch, SA Health, 2018
In 2017, there were 8,181 new notifications of STIs and BBVs in South Australia. This figure represents a 7% increase in the number of new notifications compared to notifications received in 2016, and a 14% increase compared to the five year average (2012-2016).
In 2017, there were 5,910 notifications of genital chlamydia making this the most commonly notified STI in South Australia. The notification rate of chlamydia in 2017 was 343 per 100,000 population, and has been stable over the past five years.
There were no notifications of donovanosis in 2017.
There were 1,271 notifications of gonorrhoea in 2017. The notification rate of gonorrhoea increased from 45 per 100,000 population in 2014 to 74 per 100,000 population in 2017.
There were 158 notifications of infectious syphilis in 2017, the highest number of annual notifications in the past 10 years.
There were 60 new diagnoses of HIV infection in 2017. The notification rate of newly diagnosed HIV infection in 2017 was 3.5 per 100,000 population, above that in 2016 of 3.1 per 100,000 population. The notification rate in the Aboriginal population rose to 9.6 per 100,000 in 2017, up from 4.8 per 100,000 in 2016.
There were 11 notifications of newly acquired hepatitis B infection in 2017, above the five year average (2012-2016) of nine cases per year. There were 272 notifications of unspecified hepatitis B virus infection reported in 2017. The notification rate has declined in the Aboriginal population over the past five years.
There were 32 notifications of newly acquired hepatitis C in 2017. The majority of cases were males (75%). The notification rate of unspecified hepatitis C infection was 23 per 100,000 population in 2017.
There were 10 new diagnoses of hepatitis D infection in 2017, which is consistent with the five year average of 10 notifications per year.