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Today, the Department of Health released a report on antibody data from the COVID-19 Contagion Investigation (CIS). The findings set out in this report refer to estimates for NI for the week commencing 17 October 2022.
This report is part of the Northern Ireland Publications Series as part of the COVID-19 Contagion Study. More information can be found at Website of the Ministry of Health.
The main conclusions
- In Northern Ireland for the week beginning 17 October 2022, an estimated 96.4% of adults with antibodies to SARS-CoV-2 had levels of 179 ng/ml or higher (95% confidence interval : from 94.9% to 97.4%). , and 75.3% of adults at or above 800 ng/ml (95% confidence interval: 71.6% to 78.6%).
- In Northern Ireland for the week beginning 17 October 2022, the percentage of adults estimated to have antibodies to SARS-CoV-2 of 179 nanograms per milliliter (ng/ml) or higher remained high across all age groups groups.
- Across the UK, the percentage of antibodies at or above 800 ng/ml has increased in recent weeks among people aged 65 and over, likely as a result of the vaccination campaign.
The bulletin also provides estimates of antibody positivity at 2,000 ng/mL, 4,000 ng/mL, and 6,000 ng/mL. These levels were introduced to improve monitoring of antibody levels and their decline.