Table 4 Anti-S IgGs among HCWs according to history of COVID-19 infection and vaccination, Egypt, Jan- June 2021
SARS-CoV-2 antibody test | Unvaccinated (n = 416) | Vaccinated (n = 143) | |||||||
|---|---|---|---|---|---|---|---|---|---|
No history of COVID-19 infection | With history of COVID-19 infection | No history of COVID-19 infection | With history of COVID-19 infection | ||||||
No. | % | No. | % | No. | % | No. | % | ||
SARS-CoV-2 anti-S (n = 559) | 0.001* | ||||||||
Negative | 165 | 60.9 | 41 | 28.3 | 22 | 22.7 | 1 | 2.2 | |
Positive | 106 | 39.1 | 104 | 71.7 | 75 | 77.3 | 45 | 97.8 | |