Table 6

Hospital admissions per 100,000 individuals per year for influenza (with and without pneumonia), pneumonia, and invasive pneumococcal disease (IPD)

DiagnosisInfluenzaPneumoniaIPD
VaccinatedYesNoYesNoYesNo
Influenza season247391178427511349
 OR (95% CI)0.63 (0.53–0.75)0.64 (0.60–0.69)0.28 (0.14–0.55)
 p‐value<0.0001<0.0001<0.001
Noninfluenza season812143118141915
 OR (95% CI)0.47 (0.15–1.42)0.79 (0.73–0.85)1.49 (0.76–2.21)
 p‐value<0.16<0.0001<0.23
  • Data taken from individuals who had received both vaccines (n=72,107), compared with unvaccinated persons (n=134,045) during the influenza season (December 1, 1999 to May 31, 2000), and the noninfluenza season (June 1, 2000 to November 30, 2000)

  • OR: odds ratio

  • CI: confidence interval

  • All p‐value comparisons are against the unvaccinated cohort