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| Geographic region | Number of CRID n (%) | Number of CRNID n (%) |
|---|---|---|
| North America | 373 (90) | 805 (95) |
| South America | 21 (5) | 0 (0) |
| Asia | 13 (3) | 22 (3) |
| Europe | 5 (1) | 0 (0) |
| Africa | 4 (1) | 17 (2) |
| Total | 416 (100) | 844 (100) |
CRID, cases reported with individual data; CRNID, cases reported with non-individual data.
