Blood-borne viruses and STIs surveillance
The blood-borne viruses and sexually transmitted infections (STIs) team is responsible for surveillance and control activities for hepatitis B, hepatitis C, HIV, syphilis, chlamydia and other sexually transmitted infections. As these are all largely preventable by avoiding risks, and in the case of hepatitis B, by vaccination, we work with a wide range of partners to reduce the numbers of people infected and ensure good treatment.
The multi-disciplinary team includes doctors, nurses and information officers. Some of the activities of the team include:
- Contributing to surveillance of blood-borne infections and STIs
- Ensuring actions are taken to prevent infections, working with a range of other healthcare professionals and voluntary groups
- Following up notified cases of hepatitis to reduce onward transmission
- Organising and contributing to education activities
- Preparation of annual reports
- Management of incidents and outbreaks
- Chairing and contributing to work of Hepatitis B and C Managed Clinical Network Northern Ireland Hepatitis B & C Managed Clinical Network
The most comprehensive source of data on sexually transmitted infections (STIs) is provided by the Sexual Health and HIV services in Northern Ireland.
Surveillance data and reports:
HIV/AIDS
Surveillance arrangements for HIV/AIDS infection are based largely on the confidential reporting of HIV infected individuals to the UK Health Security Agency (UKHSA).
Learn more about the virus and its surveillance:
- HIV surveillance in Northern Ireland 2024 (analysis of data from 2023) | HSC Public Health Agency
- HIV | nidirect
- Human Immunodeficiency Virus (HIV) - Sexual Health NI
Hepatitis B and C
STIs
STI surveillance annual reports:
STI data (quarterly, annual), numbers and rates of new episodes for selected STIs:
- NEW! Quarterly data (number of new episodes) - Sexually transmitted infections (STIs) in Northern Ireland, quarterly data - number of new episodes of selected diagnoses made by Sexual Health & HIV clinics in Northern Ireland, April to June 2025
- Annual data (number of new episodes) - Sexually transmitted infections (STIs) in Northern Ireland, annual data - number of new episodes for selected STIs, 2014-2024
- Annual data (rates of new episodes) - Sexually transmitted infections (STIs) in Northern Ireland, annual data - rates of new episodes for selected STIs, 2014-2024