22 December 2020: Clinical Research
Characteristics and Effectiveness of the Coronavirus Disease 2019 (COVID-19) Prevention and Control in a Representative City in China
Ping Liu 1ABCDEFG** , Zhoujun Ma 2ABCDEFG* , Yu Deng 3BCDEF , Yongpu Li 1BCDEF , Wei Xia 1BCDE , Yu Liu 1BCDE , Xiaolan Wu 4BCDE , Junhuan Mou 4BCDEF , Quan Li 5BCDE , Jianghua Nie 6BCDE , Wenxiu Zhou 7BCDE , Xueqin Fu 7BCDE , Fei Yu 8BCDE , Yan Li 8BCDE , Yaling Zhang 8BCDE , Qin Xiang 8BCDE , Xiaobin Peng 2BCDE , Guangqun Jiang 2ACG*DOI: 10.12659/MSM.927472
Med Sci Monit 2020; 26:e927472
Table 1 Summary of clinical and epidemiologic characteristics of COVID-19 patients in 2 stages.
| Characteristics | The first stage group (n=32) | The second stage group (n=9) |
|---|---|---|
| Age (yr.) | ||
| Range | 12–70 | 37–52 |
| Median | 50.5 | 45.0 |
| Male | 14 (43.8) | 4 (44.4) |
| Female | 18 (56.2) | 5 (55.6) |
| Asymptomatic | 2 (6.3) | 9 (100.0) |
| Uncomplicated illness | 5 (15.6) | 0 |
| Mild pneumonia | 19 (59.4) | 0 |
| ARDS | 6 (18.8) | 0 |
| Sepsis shock | 0 | 0 |
| Hubei Province | 11 (34.3) | 9 (100.0) |
| Close contacts | 21 (65.6) | 0 |
| Incubation period | 6 (4 to 13)a | – |
| Symptom-onset to isolation/quarantine | 5 (3 to 10)b | – |
| Symptom-onset to confirmation | 6 (3 to 11)c | – |
| Final contact to isolation/quarantine | 11 (6 to 19)d | 0 (0 to 1) |
| Quarantine to confirmation | 0 (0 to 3)d | 2 (1 to 4) |
| Average number of close contacts | 20.4 | 2.6 |
| Infection number of close contacts | 21 | 0 |
| a n=26, 6 cases were excluded, because 3 cases did not show symptoms, and 3 cases had continuous exposure to contamination sources after symptoms onset; b n=23, 9 cases were excluded, because 7 cases did not show symptoms at the time of isolation, and 2 cases showed symptoms after quarantine; c n=23, 9 cases were excluded, because 3 cases were asymptomatic infection, 3 cases showed symptoms after diagnosis, and 3 cases were retrospectively diagnosed at the end of February based on serological examination; d n=27, 5 cases were excluded, because 3 cases were retrospectively diagnosed at the end of the course based on serological examination, and 2 cases had continuous exposure to confirmed patients during the self-quarantine. | ||