Background
Methods
Data collection
Study definitions
Big data tools
Sample collection
Viral nucleic acid test
The COVID-19 patient
Asymptomatic patient
The exposure
Cluster outbreak
Close contact
Statistical analysis
Results
Characteristics of two family cluster cases
Patients | Occupation | Symptoms | Temperature | Blood leukocyte count (*109/L) | Lymphocyte count(*109/L) | Lymphocyte percentage(%) | Neutrophil percentage(%) | CT | Onset date | Admission date | Out date |
---|---|---|---|---|---|---|---|---|---|---|---|
Patient A | Retiree | Fever, running nose | 38 °C | 4.25 | 0.74 | 17.4 | 75.1 | B + | Jan13 2020 | Jan24 2020 | Feb13 2020 |
Patient B | Retiree | Fever, dry cough | 37.5 °C | 6.05 | 2.1 | 34.7 | 56.8 | B - | Jan23 2020 | Jan24 2020 | Feb23 2020 |
Patient C | Civil servants | Fever | 38.5 °C | 5.66 | 1.47 | 26.04 | 65.4 | B + | Jan19 2020 | Jan24 2020 | Feb8 2020 |
Patient D | Retiree | Fever | 37.8 °C | 5.42 | 1.21 | 22.34 | 66.44 | B + | Jan21 2020 | Jan27 2020 | Feb21 2020 |
Patient E | Retiree | – | Normal | Normal | Normal | Normal | Normal | R up + | asymptomatic | Jan27 2020 | Feb21 2020 |
Information of family No.1
Information of family No.2
The results of viral nucleic acid test
Sample number | Sampling area | Sample type | Outcomes |
---|---|---|---|
The first sampling of environmental samples on the 30 January, 2020. | |||
1 | Up and down Button of 01 floor outside of elevator | Object surface swab | Negative |
2 | Button of close and open inside of elevator | Object surface swab | Negative |
3 | Button of 01-B1 floor inside of elevator | Object surface swab | Negative |
4 | Button of 02–11 floor inside of elevator | Object surface swab | Negative |
5 | The ground of elevator | Object surface swab | Negative |
6 | The wall of elevator | Object surface swab | Negative |
7 | Both sides of elevator door | Object surface swab | Negative |
8 | The door of elevator | Object surface swab | Negative |
9 | Button of 10 floor | Object surface swab | Negative |
10 | The door handle of No.1 family | Object surface swab | Positive* |
11 | Button of 11 floor | Object surface swab | Negative |
12 | The door handle of No.2 family | Object surface swab | Negative |
13 | The door handle of the big door of building | Object surface swab | Negative |
14 | Button of 02 floor outside of elevator | Object surface swab | Negative |
15 | Button of 03 floor outside of elevator | Object surface swab | Negative |
16 | Button of 04 floor outside of elevator | Object surface swab | Negative |
17 | Button of 05 floor outside of elevator | Object surface swab | Negative |
18 | Button of 06 floor outside of elevator | Object surface swab | Negative |
19 | Button of 07 floor outside of elevator | Object surface swab | Negative |
20 | Button of 08 floor outside of elevator | Object surface swab | Negative |
21 | Button of 09 floor outside of elevator | Object surface swab | Negative |
22 | Inside the elevator | aerosol | Negative |
23 | The house of No.1 family | aerosol | Negative |
24 | The house of No.2 family | aerosol | Negative |
The second sampling of environmental samples on the 3 February, 2020. | |||
1 | Button inside of elevator | Object surface swab | Negative |
2 | Button of 08 floor outside of elevator | Object surface swab | Negative |
3 | First floor stair railing | Object surface swab | Negative |
4 | The door handle of No.2 family | Object surface swab | Negative |
5 | Third floor stair railing | Object surface swab | Negative |
6 | First floor stair railing outside of big door of building | Object surface swab | Negative |
7 | The door handle of 702 household | Object surface swab | Negative |
8 | The door handle of 1102 household | Object surface swab | Negative |
9 | The door handle of No.1 family | Object surface swab | Negative |
10 | Button of 02 floor outside of elevator | Object surface swab | Negative |