Table 2 Group of key population and attack rate of each group
Group | Exposed populations | Quarantine protocol | Tracing techniques | Risk level | Total no | No. of cases | Attack rate (%) |
|---|---|---|---|---|---|---|---|
1 | Workers at the XFD market | Centralized quarantine | Onsite | High | 3311 | 169 | 5.10 |
1.1 | Workers at the BMTH | Centralized quarantine | Onsite | High | 838 | 119 | 14.20 |
1.2 | Workers at the XFD market other than BMTH | Centralized quarantine | Onsite | High | 2473 | 50 | 2.02 |
2 | Visitors to the XFD market on June 12th | Centralized quarantine | Onsite | Medium | 7689 | 8 | 0.10 |
2.1 | Visitors to the BMTH market | Centralized quarantine | Onsite | Medium | 1078 | 8 | 0.74 |
2.2 | Visitors to the XFD market other than BMTH | Centralized quarantine | Onsite | Medium | 6611 | 0 | 0 |
3 | Visitors to XFD between May 30th and June 11th | Home quarantine | Big data | Low | 535 000 | 95 | 0.02 |
3.1 | Visitors to the BMTH market | Home quarantine | Big data | Low | 75 000 | 64 | 0.09 |
3.2 | Visitors to the XFD market other than BMTH | Home quarantine | Big data | Low | 460 000 | 31 | 0.007 |