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 Liu1ABCDEFG*, Zhoujun Ma2ABCDEFG, Yu Deng3BCDEF, Yongpu Li1BCDEF, Wei Xia1BCDE, Yu Liu1BCDE, Xiaolan Wu4BCDE, Junhuan Mou4BCDEF, Quan Li5BCDE, Jianghua Nie6BCDE, Wenxiu Zhou7BCDE, Xueqin Fu7BCDE, Fei Yu8BCDE, Yan Li8BCDE, Yaling Zhang8BCDE, Qin Xiang8BCDE, Xiaobin Peng2BCDE, Guangqun Jiang2ACGDOI: 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. | ||