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:    

HIV slide deck 2022 tables and charts (2021 data)

HIV data tables and summary 2022

HIV Report 2021 tables and charts (2020 data)

HIV report 2019.pdf


STI surveillance reports:

STI Surveillance Report 2022 (2021 data)

STI Surveillance Report 2021 (data 2020)

STI Surveillance Report 2020 (2019 data).pdf

STI surveillance report 2019 (2018 data).pdf

STI Report 2019 tables and charts (2018 data).pptx

STI data:

Quarterly STI data Oct-Dec 2022

Dec 21

Number of new episodes 2010-2020

Rate of new episodes 2010-2020