"Antibody levels varied by age group ","" "Estimated percentage of the population with levels of antibodies against SARS-CoV-2 at or above five antibody thresholds, by age group, UK, 8 August to 4 September 2022 ","" "","" "Notes","" "Unit","%" "","" "Merged","Estimated percentage at threshold","Estimated percentage lower 95% confidence limit","Estimated percentage upper 95% confidence limit" "179ng/ml threshold","undefined","undefined","undefined" "8 to 15 years","88","85.7","90.3" "16 to 24 years","98","97.2","98.7" "25 to 34 years","98.1","97.7","98.5" "35 to 49 years","97.7","97.5","98" "50 to 69 years","96.7","96.5","96.9" "70+ years","96.8","96.5","97.1" "800ng/ml threshold","undefined","undefined","undefined" "8 to 15 years","67.7","64.4","70.9" "16 to 24 years","85.5","83.6","87.4" "25 to 34 years","78.7","77.3","80" "35 to 49 years","73.8","73","74.7" "50 to 69 years","70.8","70.2","71.4" "70+ years","76.9","76.2","77.7" "2000ng/ml threshold","undefined","undefined","undefined" "8 to 15 years","41.2","37.9","44.5" "16 to 24 years","53.2","50.6","55.8" "25 to 34 years","44.3","42.7","45.9" "35 to 49 years","37.6","36.6","38.5" "50 to 69 years","41.5","40.9","42.2" "70+ years","52.1","51.2","53" "4000ng/ml threshold","undefined","undefined","undefined" "8 to 15 years","17","14.6","19.4" "16 to 24 years","23.1","20.9","25.3" "25 to 34 years","18","16.7","19.3" "35 to 49 years","14.3","13.6","15" "50 to 69 years","19.6","19.1","20.2" "70+ years","30.1","29.3","30.9" "6000ng/ml threshold","undefined","undefined","undefined" "8 to 15 years","8.3","6.5","10.1" "16 to 24 years","13","11.2","14.7" "25 to 34 years","8.9","7.9","9.8" "35 to 49 years","7.2","6.7","7.7" "50 to 69 years","10.9","10.5","11.4" "70+ years","19.9","19.2","20.6"