Table 3. Proportion of virus (sub)types/lineages (%) and vaccine mismatch per subtype/lineage based on virus isolates and specimens submitted to the NIC in week 40 of one year through week 39 of the following year, seasons 2003/04 through 2013/14, Netherlands.
| Influenza season | |||||||||||
| Virus (sub)type | 2003/04 | 2004/05 | 2005/06 | 2006/07 | 2007/08 | 2008/09 | 2009/2010 | 2010/11 | 2011/12 | 2012/13 | 2013/2014 |
| Proportion of virus (sub) types (%) | |||||||||||
| A | 99 | 80 | 64 | 99 | 49 | 92 | 100 | 60 | 90 | 69 | 94 |
| A(H1N1)1 | 0 | 18 | 4 | 13 | 86 | 1 | 100 | 97 | 1 | 39 | 40 |
| A(H3N2) | 100 | 82 | 96 | 87 | 14 | 99 | 0 | 3 | 99 | 61 | 60 |
| B | 1 | 20 | 36 | 1 | 51 | 8 | 0 | 40 | 10 | 31 | 6 |
| B | Y | Y | Y/V | Y | Y | V | NA | Y/V | Y/V | Y/V | Y/V |
| B/Vic | 91 | 95 | 12 | 6 | 24 | ||||||
| B/Yam | 9 | 5 | 88 | 94 | 76 | ||||||
| Mismatch per subtype | |||||||||||
| A(H3N2) | Yes | Yes | No | No | No | No | NA | No | Yes | Yes | Yes |
| A(H1N1)1 | NA | No | No | Yes | Yes | No | Yes2 | No | No | No | No |
| B/Vic | NA | NA | Yes (Yam in vaccine) | NA | NA | Yes (Yam in vaccine) | NA | No | No | NA | NA |
| B/Yam | Yes (Vic in vaccine) | Yes (Antigenic mismatch) | Yes (Antigenic mismatch) | Yes(Vic in vaccine) | Yes (Vic in vaccine) | NA | NA | Yes (Antigenic mismatch) | Yes (Vic in vaccine) | Yes (Antigenic mismatch) | Yes (Antigenic mismatch) |
| Vaccine mismatch | Mismatch | Mismatch | Partially match | Partially match | Mismatch | Match | Mismatch | Match | Mismatch | Mismatch | Mismatch |
V: B/Victoria/2/87-lineage; Y: B/Yamagata/16/88-lineage; NA: Not applicable.
12003/2004 through 2008/2009 season former seasonal A(H1N1); 2009/2010 through 2013/2014 season A(H1N1)pdm09.
2Seasonal A(H1N1) was used in the vaccine; A(H1N1)pdm09 monovalent vaccine was available late in the 2009/10 influenza season.