Lineage A.4
Table 1 | Summary of lineage & sub-lineages
| Lineage | Most common countries | Earliest date | Number designated | Number assigned | Travel History | Description |
|---|---|---|---|---|---|---|
| A.4 | United States of America 98.0%, Canada 2.0% | 2020-03-11 | 58 | 63 | USA lineage nested in A diversity |