The Department of Health today published a report on antibody data from the COVID-19 Infection Survey (CIS). The findings set out in this report relate to estimates for NI for the week beginning 26 September 2022.
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
- In Northern Ireland, in the week beginning 26 September 2022, the percentage of people estimated to have antibodies against SARS-CoV-2 was 95.5% of adults at or above 179 ng/ml (95% credible interval: 93.9% to 96.6%), and 69.1% of adults at or above 800 ng/ml (95% credible interval: 65.1% to 72.6%).
- In Northern Ireland, in the week beginning 26 September 2022, the percentage of the adult population estimated to have antibodies against SARS-CoV-2 at or above the level of 179 nanograms per millilitre (ng/ml) remained high across all age groups.
Estimates of antibody positivity at 2000 ng/ml, 4000 ng/ml and 6000 ng/ml are also presented in the bulletin. These levels have been introduced to enable enhanced monitoring of antibody levels and waning.
10 
