Table 5

In hospital treatment (days) per 100 000 individuals for cardiac failure in influenzavaccinated and influenza- and pneumococcal- vaccinated individuals compared with the unvaccinated cohort.


Influenza vaccinated
 Influenza and pneumococcal
 Non-vaccin




Incidence
 Reduction (95% CI)
 p
 Incidence
 Reduction (95% CI)
 p
 Incidence
2003
 Influenza season







65 – 79 years
 3812
 - 25% (1,09–1,52)
 < 0.01
 4175
 - 32% 1,19–1,77)
 < 0.001
 2914

Non-influenza season







65 – 79 years
 6353
 - 72% (3,03–4,08)
 < 0.001
 944
 50% (0,35–0,75)
 < 0.001
 1889
2004
 Influenza season







65 – 79 years
 1537
 53% (0,36–0,62)
 < 0.001
 2491
 24% (0,63–0,92)
 < 0.005
 3265

Non-influenza season







65 – 79 years
 4279
 - 38% (1,35–1,92)
 < 0.001
 3051
 - 12% (0,74–1,05)
 < 0.2
 2687
2005
 Influenza season







65 – 79 years
 1658
 62% (0,28–0,51)
 < 0.01
 3046
 29% (0,62–0,82)
 < 0.001
 4215

Non-influenza season







65 – 79 years
 360
 77% (0,07–0,25)
 < 0.001
 2536
 5% (0,81–1,11)
 < 0.7
 2647

Christenson et al. Virology Journal 2008 5:52   doi:10.1186/1743-422X-5-52