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Summary of discrepancies between the VOC assays and genome sequencing
| Discrepancy | Issue | No. of samples | Lineage by genome sequencing |
|---|---|---|---|
| Misclassified as P.1/B.1.351 | Presence of C21774T mutation adjacent to H68/V70 deletion region | 8 | B.1.1.7 |
| Presence of N501Y mutation but absence of other VOC-specific mutations | 27 | B.1 | |
| 2 | B.1.438 | ||
| Misclassified as wild-type | N501Y mutation undetected by the variant assay | 2 | B.1.1.7 |
