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Percentages of circulating 3C.2a and 3C.3a A/H3N2 viruses which showed ≤ 2-fold and 4-fold differences (HI assay) to cell- and egg-propagated reference virus titres for the February 2016–September 2016 influenza seasons.
| Clade | Reference Virus | ≤2-Fold | 4-Fold |
|---|---|---|---|
| 3C.2a | Cell-based | 60% | 31% |
| 3C.2a | Egg-based | 19% | 50% |
| 3C.3a | Cell-based | 76% | 20% |
| 3C.3a | Egg-based | 64% | 36% |
