Table 2.
Top 10 cities with the highest user ratios.
| City | Country | Usersa, n | Population, N | User ratiob | Confirmed, n | Confirmed ratiob | Screenedc, n | Screened ratiob |
| Seoul | South Korea | 22,542 | 10,010,983 | 225.17 | 360 | 3.60 | 65,952 | 658.80 |
| Busan | South Korea | 4768 | 3,459,840 | 137.81 | 112 | 3.24 | —d | — |
| Jakarta | Indonesia | 13,646 | 10,504,100 | 129.91 | 515 | 4.90 | 3704 | 35.26 |
| Depok | Indonesia | 2866 | 2,727,209 | 105.09 | 10 | 0.37 | 634 | 23.25 |
| Bandung | Indonesia | 2093 | 2,580,191 | 81.12 | 3 | 0.12 | 221 | 8.57 |
| Daegu | South Korea | 1805 | 2,468,222 | 73.13 | 6482 | 262.62 | — | — |
| Surabaya | Indonesia | 2110 | 2,944,403 | 71.66 | 31 | 1.05 | 217 | 7.37 |
| Daejeon | South Korea | 921 | 1,493,979 | 61.65 | 31 | 2.07 | 8201 | 548.94 |
| Incheon | South Korea | 1293 | 3,029,285 | 42.68 | 47 | 1.55 | 15,219 | 502.40 |
| New York | United States | 534 | 8,398,748 | 6.36 | 20,011 | 238.26 | — | — |
aUsers from March 1 to 27, 2020.
bRatio defined as count per 100,000 people.
cIn Korea, screened cases indicate the patients who underwent COVID-19 testing, but in Indonesia, the number of screened cases were defined as the sum of patients classified as under monitoring, under supervision, and confirmed.
dNot available.