Table 1.
Clinical symptoms and complications of infection during hospitalization
| Category | 2015–2019 | 2020–2022 | 2023 | χ2 | P |
|---|---|---|---|---|---|
| Severity of illness | |||||
| Severity | 9501 (10.86%) | 7458 (16.30%) | 3103 (6.12%) | 2570.167 | < 0.001 |
| Critical illness | 18 (0.021%) | 36 (0.079%) | 26 (0.051%) | 24.317 | < 0.001 |
| Symptoms | |||||
| Cough | 179 (0.205%) | 91 (0.199%) | 31 (0.061%) | 45.134 | < 0.001 |
| Fever | 2373 (2.712%) | 991 (2.166%) | 344 (0.678%) | 680.006 | < 0.001 |
| Vomit | 348 (0.398%) | 169 (0.369%) | 29 (0.057%) | 136.772 | < 0.001 |
| Shock | 2 (0.002%) | 6 (0.013%) | 9 (0.018%) | 141.03 | < 0.001 |
| Complications | |||||
| Laryngitis | 350 (0.400%) | 369 (0.807%) | 438 (0.863%) | 141.03 | < 0.001 |
| Pneumonia | 8117 (0.734%) | 6774 (1.047%) | 2932 (0.154%) | 2100.651 | < 0.001 |
| Encephalitis | 243 (0.278%) | 60 (0.131%) | 12 (0.024%) | 127.025 | < 0.001 |
| Bronchitis | 7078 (8.090%) | 3574 (7.813%) | 3298 (6.500%) | 120.48 | < 0.001 |
| Myocardial damage | 41 (0.047%) | 45 (0.098%) | 53 (0.104%) | 18.308 | < 0.001 |
| Respiratory failure | 11 (0.013%) | 30 (0.061%) | 19 (0.038%) | 26.39 | < 0.001 |