Table 1.
Demographic Characteristics of the 2351 Omicron Cases and the Major Outbreak Clusters in South Korea
| Characteristic | Total | Major Cluster Outbreaks | ||||
|---|---|---|---|---|---|---|
| Daycare in Daegu | Daycare in North Jeolla Province | Kindergarten | Church | USFK Air Base | ||
| Overall, No. | 2351 | 152 | 152 | 101 | 61 | 35 |
| Imported | 1276 (54.3) | 0 (0) | 1 (0.7) | 0 (0) | 2 (3.3) | 0 (0) |
| Pandemic period | 25 Nov 2021– 8 Jan 2022 | 24 Dec 2021– 5 Jan 2022 | 5 Dec 2021– 4 Jan 2022 | 16–30 Dec 2021 | 25 Nov– 16 Dec 2021 | 24 Dec 2021– 3 Jan 2022 |
| Sex | ||||||
| Male | 1165 (49.6) | 61 (40.1) | 71 (46.7) | 46 (45.5) | 33 (54.1) | 20 (57.1) |
| Female | 1186 (50.4) | 91 (59.9) | 81 (53.3) | 55 (54.5) | 28 (45.9) | 15 (42.9) |
| Age group, y | ||||||
| ≤7 | 181 (7.7) | 46 (30.3) | 22 (14.5) | 48 (47.5) | 10 (16.4) | 0 (0) |
| 8–19 | 281 (12.0) | 23 (15.1) | 4 (2.6) | 5 (5.0) | 6 (9.8) | 6 (17.1) |
| 20–39 | 1129 (48.0) | 40 (26.3) | 50 (32.9) | 22 (21.8) | 24 (39.3) | 16 (45.7) |
| 40–59 | 565 (24.0) | 42 (27.6) | 42 (27.6) | 17 (16.8) | 15 (24.6) | 11 (31.4) |
| 60–74 | 170 (7.2) | 1 (0.7) | 24 (15.8) | 9 (8.9) | 6 (9.8) | 2 (5.7) |
| ≥75 | 25 (1.1) | 0 (0) | 10 (6.6) | 0 (0) | 0 (0) | 0 (0) |
| Clinical features, asymptomatic | 459 (19.5) | 11 (7.2) | 25 (16.4) | 29 (28.7) | 9 (14.8) | 6 (17.1) |
| COVID-19 vaccination status | ||||||
| 1 dose | 72 (3.1) | … | … | … | … | … |
| 2 doses | 1249 (53.1) | … | … | … | … | … |
| 3 doses | 121 (3.5) | … | … | … | … | … |
Data are presented as No. (%) unless otherwise indicated.
Abbreviations: COVID-19, coronavirus disease 2019; USFK, United States Forces Korea.