Table 5.
Clinical severity of delta variant infected patients in different vaccination status in Jingmen City, Hubei Province in August 2021.
| Outcome | Unvaccinated | Partially vaccinated | Fully vaccinated | ||||
|---|---|---|---|---|---|---|---|
| n | n | RR (95% CI) | *Reduced risk % (95% CI) | n | RR (95% CI) | *Reduced risk % (95% CI) | |
| The COVID-19 infection (N = 58) | |||||||
| Symptomatic | 19 | 7 | 1.35 (0.21–8.68) |
−35 (−768 to 79) |
17 | 0.66 (0.41–1.07) |
34 (−7 to 59) |
| Moderate | 8 | 5 | 1.59 (0.50–5.09) |
−59 (−409 to 50) |
6 | 0.87 (0.53–1.43) |
13 (−43 to 47) |
| Mild | 11 | 2 | 0.83 (0.22–3.18) |
17 (−218 to 78) |
11 | 0.78 (0.49–1.24) |
22 (−24 to 51) |
| Asymptomatic | 4 | 1 | Ref. | 10 | Ref. | – | |
|
Age≥12 years (N = 47) | |||||||
| Symptomatic | 11 | 7 | 0.78 (0.17–3.49) |
22 (−249 to 83) |
17 | 0.67 (0.47–0.95) |
33 (5–53) |
| Moderate | 5 | 5 | 1 (0.22–4.56) |
0 (−356 to 78) |
6 | 0.6 (0.34–1.062) |
40 (−6 to 66) |
| Mild | 6 | 2 | 0.5 (0.08–3.13) |
50 (−213 to 92) |
11 | 0.71 (0.48–1.06) |
29 (−6 to 52) |
| Asymptomatic | 1 | 1 | Ref. | – | 10 | Ref. | Ref. |
*
Reduced risk compared with the unvaccinated; Ct, cycle threshold; IQR, inter quartile range; RR, risk ratio; 95% CI, 95% confidence interval; –, not available.