Sexually transmitted infections

The most comprehensive source of data on sexually transmitted infections in Northern Ireland is provided by the five genito-urinary medicine (GUM) clinics in Belfast, Coleraine, Londonderry, Newry and Downpatrick.

Data are recorded on gender, age and male sexual orientation for certain infections. Area of residence is not recorded.

Surveillance arrangements for HIV/AIDS infection are based largely on the confidential reporting of HIV infected individuals to the Public Health England’s Centre for Infections in London.

There are two main outputs:

  • Data relating to individuals whose first diagnosis was made in Northern Ireland.
  • Data relating to individuals who accessed Northern Ireland-based HIV services, published as annual reports of the Survey of Prevalent HIV Infected cases (SOPHID).

PHE data


HIV surveillance reports:    
2023 Northern Ireland HIV data (2022 data)
2022 HIV tables and charts (2021 data)
2022 HIV data tables and summary 2022
2021 HIV report tables and charts (2020 data)
HIV report 2019
HIV repot 2019 charts and tables

STI surveillance reports:
STI Surveillance Report 2023 (2022 data)
STI Surveillance Report 2022 (2021 data)
STI Surveillance Report 2021 (data 2020)
STI Surveillance Report 2020 (2019 data)
STI surveillance report 2019 (2018 data)
STI Report 2019 tables and charts (2018 data)

STI data:
Quarterly STI data Jul-Sept 2023
Number of episodes for selected STIs 2013-2022 
Rates of episodes for selected STIs 2013-2022