Table 2.
Epidemiological characteristics of the SARS-CoV-2 delta variant outbreak in Jingmen City, Hubei Province, China in August 2021.
| Characteristic | Delta variant positive persons (N = 58) |
|---|---|
| n (%)* | |
| Age group, years | 39 (1–60) |
| Median age (range), years | |
| ≤18 | 11 (19.0) |
| 19–29 | 5 (8.6) |
| 30–39 | 15 (25.9) |
| 40–49 | 11 (19.0) |
| 50–59 | 14 (24.1) |
| ≥60 | 2 (3.4) |
| Gender | |
| Female | 20 (34.5) |
| Male | 38 (65.5) |
| Occupation | |
| Worker | 32 (55.2) |
| Preschool children# | 8 (13.8) |
| Student | 3 (5.2) |
| Teacher | 1 (1.7) |
| Others | 15 (25.9) |
| District | |
| A District where the index cases located | 51 (87.9) |
| B District near A District | 7 (12.1) |
| Exposure history | |
| Returned from an endemic area | 3 (5.2) |
| Household contact | 17 (29.3) |
| Social contact | 38 (65.5) |
| Clinical severity | |
| Asymptomatic | 15 (25.9) |
| Mild | 24 (41.4) |
| Moderate | 19 (32.8) |
| Severe and Critical | 0 (0) |
| Vaccination status | |
| Unvaccinated | 23 (39.7) |
| Partial vaccinated | 8 (13.8) |
| Fully vaccinated | 27 (46.6) |
| Median Ct value of RT-PCR (IQR) | |
| N gene | 26.7 (22.9–31.0) |
| ORF1ab gene | 27.4 (22.0–32.2) |
*
n (%), number (percentage) unless otherwise specified; Ct, cycle threshold; IQR, inter quartile range.
#
Preschool children, the children who did not attend kindergarten or school.