STI, BBV & HIV Epidemiology Update Period Ending 1st Quarter 2019 Byron Minas and Kellie Mitchell Communicable Disease Control Directorate Department of Health
Number of chlamydia, gonorrhoea, unspecified hepatitis B & unspecified hepatitis C notifications in WA by time period 14,000 Time period comparison Infection 5 year mean Previous 12-month period 12,000 Chlamydia Comparable Comparable Gonorrhoea 36% increase 16% increase 10,000 Number of notifications Hepatitis B (unsp.) 14% decrease 6% decrease Hepatitis C (unsp.) 13% decrease 13% decrease 8,000 6,000 3,668 2,696.0 3,160 4,000 981.4 2,000 11,518.2 555.8 990 857 11,287 11,608 509 476 0 Chlamydia Gonorrhoea Hepatitis B (Unspecified) Hepatitis C (Unspecified) Infection 5 Yr Mean 2017/2018 2018/2019 2
Number of infectious syphilis, newly acquired hepatitis B & newly acquired hepatitis C notifications in WA by time period 600 Time period comparison Infection 5 year mean Previous 12-month period 500 Infectious syphilis Doubled 53% increase Hepatitis B (new acq.) Comparable Comparable Number of notifications Hepatitis C (new acq.) 23% decrease 14% decrease 400 300 200 100 25.6 213.2 143.6 29 20 314 479 128 110 0 Infectious syphilis Hepatitis B (Newly acquired) Hepatitis C (Newly acquired) Infection 5 Yr Mean 2017/2018 2018/2019 3
Number of infectious syphilis notifications by exposure category and time period 250 212 188 200 Number of notifications 142 150 128.2 100 80 53 47 38.8 50 31.4 19 14 11 11 7.0 4.0 2.2 6 2 0 MSM Heterosexual Unknown MSM Heterosexual Unknown Metro Non-metro Area and exposure category 5 yr mean 2017/2018 2018/2019 4
Number of infectious syphilis notifications in the metropolitan area by exposure category and time period 250 207 183 200 Number of notifications 126.4 150 100 46 50 38 30 20.6 16 14 8.8 11 4.0 1.8 1.4 0.8 0.6 0.0 0.0 5 5 3 3 3 1 1 1 0 0 0 0 0 Transsexual Transsexual Male hetero Male unknown MSM Female Male hetero Male unknown MSM Female Aboriginal Non-Aboriginal Aboriginality and exposure category 5 yr mean 2017/2018 2018/2019 5
Proportion of infectious syphilis notifications in the metropolitan area by exposure category and time period 100% 1% 5% 6% 7% 11% 12% 90% 12% 11% 15% 15% 80% Proportion of notifications 70% 60% 50% 85% 80% 80% 40% 74% 68% 30% 20% 10% 0% 2014/2015 2015/2016 2016/2017 2017/2018 2018/2019 Time period MSM Male heterosexual Female 6
Syphilis testing, notification and test positivity rate among metropolitan females by time period Testing rate per 1,000 population 50 0.8 45 0.7 Notification rate per 100,000 population 40 Test positivity rate per 1,000 tests 0.6 35 0.5 30 25 0.4 20 0.3 15 0.2 10 0.1 5 0 0.0 2014/2015 2015/2016 2016/2017 2017/2018 2018/2019 Time period Testing rate per 1,000 population Notification rate per 100,000 population Test positivity rate per 1,000 tests 7
Number of infectious syphilis notifications among Aboriginal people in the endemic area by region and time period 25 Possible start of Goldfields outbreak 20 Number of notifications 15 Outbreak started in the Pilbara 10 Outbreak started in the Kimberley 5 0 Apr Jun Aug Nov Jan Mar May Jul Sep Nov Jan Mar Jun Aug Oct Dec Feb Apr Jun Aug Oct Dec Feb Apr Jun Aug Oct Dec Feb 2014 2015 2016 2017 2018 2019 Year and month Goldfields Kimberley Midwest Pilbara 8
HIV 9
Number of HIV notifications in WA by time period Time period comparison Previous 5-year Previous 12-month period mean (n=94.0) 24% decrease Stable 10
Crude HIV notification rate in WA by sex and time period 11
Number of HIV notifications in WA by exposure category and time period 12
Male heterosexual HIV notifications in WA by Quarter Male Heterosexual HIV Cases Quarter 1, 2019 (n=13) 10 overseas-acquired 6 acquired in South-East Asia 13
Time from HIV diagnosis to treatment in WA HIV notifications April 2018 to March 2019 (n=71) 14
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