Table 2.
Characteristics of the participants at the follow-up survey.
| Characteristic |
Infected workers without Long COVID
(n = 1298) |
Infected workers with Long COVID
(n = 248) |
||
|---|---|---|---|---|
| Frequency of vaccination, n (%) | ||||
| 1 | 48 (3.7) | 15 (6.0) | ||
| 2 | 427 (33.1) | 72 (29.0) | ||
| 3 | 527 (40.8) | 102 (41.1) | ||
| 4 | 170 (13.2) | 23 (9.3) | ||
| 5 | 9 (0.7) | 4 (1.6) | ||
| 6 | 110 (8.5) | 32 (12.9) | ||
| Symptom of Long COVID, n (%) | ||||
| Fever (37.0°C or higher) | 90 (36.2) | |||
| Respiratory symptoms | 176 (70.9) | |||
| Physical pain | 91 (36.6) | |||
| Cardiovascular symptoms | 77 (31.0) | |||
| Tiredness, dullness of the body, muscle weakness | 146 (58.8) | |||
| Abnormal taste or sense of smell | 74 (29.8) | |||
| Decreased ability to think and concentrate | 79 (31.8) | |||
| Insomnia, anxiety, mood swings | 70 (28.2) | |||
| Skin problems (skin rash, itching), hair loss | 59 (23.7) | |||
| Others | 143 (57.6) | |||