Coronavirus (Covid-19) Infection Survey – Antibody and Vaccination Data for Northern Ireland
Date published:
The Department of Health today published a report on antibody and vaccination data from the COVID-19 Infection Survey (CIS).
The findings set out in this report relate to estimates for Northern Ireland for the week beginning 15 November 2021.
This report is part of the series of Northern Ireland publications from the COVID-19 Infection Survey. Further information can be found on the Department of Health website.
Key Findings
Due to the relatively small number of people who tested positive for antibodies within our sample, credible intervals are wide and therefore results should be interpreted with caution.
- In Northern Ireland, it is estimated that 91.6% of the adult population (95% credible interval: 87.9% to 93.5%) would have tested positive for antibodies against SARS-CoV-2 on a blood test in the week beginning 15 November 2021, suggesting they had the infection in the past or have been vaccinated.
- In the week beginning 15 November 2021, the percentage of adults testing positive for coronavirus (COVID-19) antibodies remained high and increased in most age groups in Northern Ireland. The percentage of adults aged 16 to 69 testing positive for antibodies ranged from 90.9% to 97.0%; for those 70 years and over it was 89.7% (95% credible interval: 81.5% to 93.9%).
- Modelled vaccination estimates are not available in this bulletin as the estimates require additional quality assurance; they will be reintroduced as soon as possible.
Notes to editors:
- The Department of Health has been working along with the Public Health Agency, Northern Ireland Statistics and Research Agency and the Office for National Statistics (and its various survey partners) to extend the COVID-19 Infection Survey to Northern Ireland. Fieldwork in Northern Ireland began on 27 July 2020.
- All results are provisional and subject to revision. Due to the relatively small number of people who tested positive for antibodies within our sample, credible intervals are wide and therefore results should be interpreted with caution.
- These statistics refer to the presence of antibodies to the Coronavirus (COVID-19) and vaccinations within the community population, by which we mean private residential households. These figures exclude those in hospitals, care homes and/or other institutional settings.
- This report is part of the series of Northern Ireland publications from the COVID-19 Infection Survey. Positivity estimates are published on a weekly basis and antibody/vaccination data fortnightly. Further information can be found on the Department of Health website.
- Further information about quality and methodology associated with the survey can be found on the ONS website.
- This publication is available online.
- Additional information is available from:
Information Analysis Directorate
Department of Health
Annex 2, Castle Buildings
Stormont
Belfast BT4 3SQ
Telephone: 028 9052 2340 E-mail: statistics@health-ni.gov.uk
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