Table 3.
Season strength, circulating influenza viruses, and attack rates by country.
| Attack rate (%) in the total cohort in each country |
Dominant strain |
|||||
|---|---|---|---|---|---|---|
| Country | Number subjects in country in the immunogenicity subset (% of total cohort) | A/H3N2 season strength† | AS03-TIV | TIV | National | Study |
| Belgium | 134 (2.77%) | high | 1.83 | 1.84 | H3N2 | H3N2 |
| Canada | 130 (2.69%) | moderate | 1.47 | 1.10 | H1N1/Influenza B | H3N2/Influenza B |
| Czech Republic | 1096 (22.69%) | high | 1.41 | 1.88 | H3N2 | H3N2 |
| Estonia | 141 (2.92%) | low | 1.25 | 0.90 | H3N2/Influenza B | H3N2 |
| France | 128 (2.65%) | high | 1.62 | 1.42 | H3N2 | H3N2 |
| Germany | 1068 (22.11%) | moderate | 1.03 | 1.39 | H3N2/Influenza B | H3N2 |
| Mexico | 130 (2.69%) | low | 1.04 | 0.99 | H3N2/H1N1 | Influenza B |
| Netherlands | 126 (2.61%) | high | 2.68 | 3.44 | H3N2 | H3N2 |
| Norway | 133 (2.75%) | high | 0.88 | 1.44 | H3N2 | H3N2 |
| Poland | 144 (2.98%) | high | 2.62 | 2.69 | H3N2 | H3N2 |
| Romania | 143 (2.96%) | low | 1.47 | 1.08 | H3N2 | H3N2 |
| Russia | 140 (2.90%) | low | 1.06 | 1.28 | H3N2/H1N1 | H3N2 |
| Taiwan | 139 (2.88%) | low | 0.27 | 0.40 | H1N1/Influenza B | H1N1 |
| United Kingdom | 130 (2.69%) | high | 1.18 | 1.80 | H3N2 | H3N2 |
| United States | 1048 (21.70%) | moderate | 0.51 | 0.78 | H1N1/Influenza B | Influenza B |
†
Based on national surveillance data and study surveillance based on the review of the Adjudication Steering Committee for the Influenza peak season (2008–2009 influenza season)