Table 1 COVID-19 seroprevalence during the study period

From: Serum anti-nucleocapsid antibody correlates of protection from SARS-CoV-2 re-infection regardless of symptoms or immune history

 

Overall (N = 4496) n (%)

95% CI

Non-hybrid (N = 3506) n (%)

95% CI

Hybrid (N = 990) n (%)

95% CI

Dec. 2022

Anti-S

4400 (97.9%)

97.4%, 98.3%

3410 (97.3%)

96.7%, 97.8%

990 (100.0%)

99.6%, 100.0%

 

Anti-N

1039 (23.1%)

21.9%, 24.4%

73 (2.1%)

1.6%, 2.6%

966 (97.6%)

96.4%, 98.4%

Feb. 2023

Anti-S

4416 (98.2%)

97.8%, 98.6%

3426 (97.7%)

97.2%, 98.2%

990 (100.0%)

99.6%, 100.0%

 

Anti-N

1358 (30.2%)

28.9%, 31.6%

413 (11.8%)

10.7%, 12.9%

945 (95.5%)

94.0%, 96.7%