Table 1.
Patients' Condition and Sample Positive Rate of Every Environment.
| Hospital | Protection level | Place name | Bed number of confirmed patients | Disease severity of confirmed patient | Nucleic acid test results |
COVID-19 IgM |
Date of sampling | Epidemiological history | Positive rate of environmental samples | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Positive date | Negative date | Positive date | Negative date | ||||||||
| Xiangya Hospital (H –X) |
Level 1 | Hemodialysis room a | There was no confirmed patient of COVID-19 in theory. | – | – | – | – | – | – | 0 | |
| Level 1.5 | General fever clinica | – | – | – | – | – | – | 0 | |||
| Level 2 | COVID-19 respiratory investigation ward b | 02 | Moderate | Feb.18 | – | – | – | Feb.18 | Yes. | 7.7 % | |
| Level 3 | Virus nucleic acid laboratory c | There was no new confirmed case was reported within 9 days before sampling. | – | – | – | – | – | – | 0 | ||
|
Chenzhou Second People's Hospital (H-C) |
Level 3 | COVID-19 confirmed patient ward | 18 | Mild | Feb. 18 | Feb. 22/26 | Feb. 24 | Feb. 25 | Feb.25 | Yes. | 0 |
| 33 | Feb. 13 | Feb. 18/24 | Feb. 21/24 | – | Yes. | ||||||
| 35 | Feb. 8 | Feb. 16/18/20/21 | Feb. 24 | Feb. 16 | Yes. | ||||||
| 36 | Feb. 12 | Feb. 17/22/24 | Feb. 21 | Feb. 24 | Yes. | ||||||
| 37 | Feb. 12 | Feb. 21/22/24 | Feb. 24 | – | Yes. | ||||||
| 38 | Feb. 9 | Feb. 21/22/24 | Feb. 24 | – | Yes. | ||||||
| 39 | Feb. 9 | Feb.16/18/21/24 | Feb. 12/24 | – | Yes. | ||||||
| 40 | Feb. 9 | Feb. 18/21/24 | Feb. 12/24 | – | Yes. | ||||||
| Shaoyang Central Hospital (H–S) | Level 3 | The ward of confirmed intensive care patient | ICU | Severe | Feb 28 | – | – | – | Feb.29 | Yes. | 82.6 % |
All dialysis patients of hemodialysis room of Xiangya hospital (H-X) must check lung CT and blood routine to exclude COVID-19 before hemodialysis. Fever patients were not allowed to enter hemodialysis room. The general fever clinic of H-X also only accepted fever patients without high risk factors of COVID-19. In theory, there will be no confirmed patients in those environments.
COVID-19 respiratory investigation ward of H-X mainly received COVID-19 suspected patients. But H-X was not a designated hospital of COVID-19 confirmed case. Once confirmed, the patient will be transferred to a special hospital immediately. There was just one confirmed patient on our sampling day. The patient had stayed in the ward for about 10 days. The first 4 nucleic acid tests were negative and just turned positive on the day of sampling.
Virus nucleic acid laboratory of H-X collected nasopharyngeal swab specimens of all confirmed patients in the whole hospital. But no positive result was reported within 9 days before sampling.