Table 1: Geographical origin of samples and timespan of sample collection data.
| Continental Area | Sample Area | Earliest Sample Collection Date | Latest Sample Collection Date |
| China | 109 | 2019-12-23 | 2020-03-18 |
| Asia (sans China) | 33 | January 2020 | 2020-04-05 |
| Europe | 24 | January 2020 | 2020-03-24 |
| US | 1327 | 2020-01-19 | 2020-04-14 |
| Other | 8 | January 2020 | March 2020 |