1. Sexually Transmitted Infections (STIs) in Ireland: 2017
Provisional Data
April, 2018

2. STIs in Ireland, 2017 Provisional data Acknowledgements
The Health Protection Surveillance Centre (HPSC) would like to thank all those who provided the data for this report, particularly the STI clinics, the infectious disease surveillance staff within the departments of public health, the laboratories and GP clinics.
Non-identifiable STI data were extracted from CIDR on 06th March 2018, and were correct at the time of publication.
These slides may be copied and reproduced, provided HPSC is acknowledged. Suggested citation: HSE-Health Protection Surveillance Centre. STI provisional slideset Dublin: HPSC; 2018.

3. STIs in Ireland, 2017 Provisional data
These slides present provisional data on STIs notified to HPSC during 2017 via CIDR.
Following validation of data, more detailed reports on the epidemiology of STIs for 2017 will be produced.
Aggregate data on ano-genital warts (AGW) and non-specific urethritis (NSU) are reported to HPSC on a bi-annual basis from Depts. of Public Health and are reported separately.
HIV, hepatitis B and sexually transmitted enteric infections (STEI), such as shigellosis, are reported separately.

4. STIs on the rise 10% increase compared to 2016 STI 2017 2016 % change
Chancroid -
Chlamydia trachomatis infection
7,417
6,892
+7.6
Gonorrhoea
2,260
1,955
+15.6
Granuloma inguinale
Herpes simplex (genital)
1,564
1,369
+14.2
Lymphogranuloma venereum (LGV) 18 48
-62.5
Syphilis (early infectious)
408
305
NA*
Trichomoniasis 70 79
-11.4
Total
11,737
10,648
+10.2
*The number of early infectious syphilis cases reported during 2017 is elevated when compared to data for 2016 due to an update to the laboratory criteria for notifying early infectious syphilis which increased the sensitivity of reporting from 1st July 2016 onwards.

5. Gender distribution, 2017
More men than women

6. Age distribution, 2017 Higher numbers among young people
Note: data for individuals under 15 or over 60 years old are excluded from this graph

7. Mode of transmission, 2017
Men who have sex with men (MSM) at highest risk
Note: mode of transmission data are not collected for other STIs

8. Burden of disease, 2017 Who is most affected? Young people
Young people aged years old accounted for 50% of chlamydia cases, 38% of herpes simplex cases and 39% of gonorrhoea cases notified in 2017
Further information on STIs among young people is available at
Men who have sex with men (MSM)
Where mode of transmission is known:
100% of LGV cases
88% of syphilis cases, and
62% of gonorrhoea cases in 2017, were in MSM

9. Preventing STIs Safer sex Get tested regularly
Further information on free sexual health services is available at
(resource for gay, bisexual men)
Use condoms for vaginal, oral and anal sex
Reduce the number of partners and overlapping partners
The more partners you have, the greater your chance of coming into contact with a person with HIV or other sexually transmitted infection

10. Further information Where to get more details
Detailed tables on these provisional data will be available on the HPSC website later in Detailed epidemiological reports will also be available later in Information on trends is available in previous annual epidemiological reports.
You can stay up-to-date with current STI data with the Weekly HIV & STI report.