Table 2.
Comparison of current situations of COVID-19 infection in Beijing, Guangzhou, and Shenzhen during the analysis period.
| Megacities | Periods | Number of infected communities | Number of new cases (percentage of imported cases) | ⁎Average case per infected community |
|---|---|---|---|---|
| Beijing | 21st Jan–3rd Feb | 46 | 223(66.82%) | 4.85 |
| 6th–8th Feb | 30 | 52(25.00%) | 3.62 | |
| 9th–12th Feb | 25 | 40(10.00%) | 3.12 | |
| 13th–27th Feb | 25 | 44(6.82%) | 2.85 | |
| 21st Jan–27th Feb | 126 | 359(47.08%) | / | |
| Guangzhou | 21st Jan–3rd Feb | 112 | 216(71.76%) | 1.93 |
| 6th–8th Feb | 39 | 49(20.41%) | 1.75 | |
| 9th–12th Feb | 18 | 23(N/A) | 1.70 | |
| 13th–27th Feb | 12 | 19(N/A) | 1.70 | |
| 21st Jan–27th Feb | 181 | 307(≥53.75%) | / | |
| Shenzhen | 21st Jan–3rd Feb | 82 | 269(85.13%) | 3.28 |
| 6th–8th Feb | 57 | 50(54.00%) | 2.29 | |
| 9th–12th Feb | 23 | 27(66.67%) | 2.14 | |
| 13th–27th Feb | 17 | 26(57.69%) | 2.08 | |
| 21st Jan–27th Feb | 179 | 372(77.69%) | / |
⁎
Average values of cases per community were calculated for the periods of 21st Jan–3rd Feb, 21st Jan–8th Feb, 21st Jan–12th Feb, and 21st Jan–27th Feb, because the newly confirmed cases may belong to some previously infected communities. N/A: the numbers of imported cases in Guangzhou in these periods were not obtained. The second stage only covered Feb 6th–8th due to the missing detailed information of infected communities in 4th–5th Feb.