TABLE 2

Vaccine Effectiveness Against Any Influenza in Children, by Age and Vaccine Type

Season (Predominant Strain) and Age RangeAdjusted Vaccine Effectiveness, % (95% CI)
LAIV4IIV3/IIV4
2013–2014 (H1N1pdm09)
 2–17 years2 (–53 to 37)61 (42 to 74)
 2–8 years–39 (–156 to 25)60 (32 to 76)
 9–17 years36 (–31 to 69)62 (30 to 80)
2014–2015 (H3N2)
 2–17 years9 (–18 to 29)31 (16 to 44)
 2–8 years9 (–28 to 35)26 (2 to 44)
 9–17 years17 (–27 to 46)33 (9 to 51)
2015–2016 (H1N1pdm09)
 2–17 years3 (–49 to 37)63 (52 to 72)
 2–8 years–3 (–76 to 40)58 (40 to 70)
 9–17 years20 (–78 to 64)71 (52 to 82)
  • Source: CDC.