TABLE 3

Percentage Vaccinated Among Influenza-Associated Pediatric Deaths Compared With NHIS Sample According to High-Risk Status, With VE Estimates by Season and Age Group

Children With High-Risk Medical ConditionsChildren Without High-Risk Medical Conditions
StratumInfluenza-Associated DeathsaNHIS SamplebVEcInfluenza-Associated DeathsaNHIS SamplebVEc
No. Vaccinated/Total% VaccinatedAverage % Vaccinated (LCL, UCL)%95% CINo. Vaccinated/Total% VaccinatedAverage % Vaccinated (LCL, UCL)%95% CI
Overall47/1533147(37, 57)5131 to 6727/1352040(38, 43)6547 to 78
Age
 6 mo– 4 y14/383748(37, 60)39−22 to 7116/543046(43, 49)5214 to 74
 5 –12 y19/722649(41, 57)6541 to 817/551339(37, 42)7957 to 92
 13–17 y14/433341(31, 51)33–28 to 674/261530(27, 33)60–5 to 89
Season
 2010–201112/294145(36, 54)13–85 to 629/432140(37, 42)6324 to 84
 2011–20123/132348(39, 56)730 to 941/81345(42, 47)8916 to 99
 2012–201321/643343(34, 53)380 to 657/521437(34, 39)7646 to 90
 2013–201411/472353(42, 63)7550 to 8810/323146(43, 49)48–11 to 77
Influenza virus
 Influenza A26/952746(36, 56)5935 to 7418/782341(39, 44)5931 to 77
 Influenza B21/553848(39, 57)35–13 to 639/551638(36, 41)7143 to 87
  • LCL, lower 95% confidence limit; UCL, upper 95% confidence limit; CI, credible interval.

  • a Excludes cases with unknown vaccination status.

  • b Average influenza vaccine coverage estimates (with lower and upper 95% confidence limits) for NHIS comparison cohorts, paired by season, age category, and high-risk status with pediatric deaths, during month ending >14 d before case illness onset.

  • c VE estimates and Bayesian 95% CIs estimated from logistic regression.