TABLE 2

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

Season (Predominant Strain)Age Range (y)Adjusted VE % (95% CI)
LAIV4IIV3/IIV4
2013–2014a (H1N1pdm09)2–177 (−46 to 40)60 (41 to 73)
2–8−36 (−151 to 27)59 (30 to 76)
9–1741 (−21 to 72)61 (27 to 79)
2014–2015b (H3N2)2–179 (−18 to 29)31 (16 to 44)
2–89 (−28 to 35)26 (2 to 44)
9–1717 (−27 to 46)33 (9 to 51)
2015–2016c (H1N1pdm09)2–175 (−47 to 39)60 (47 to 70)
2–80 (−75 to 43)56 (42 to 71)
9–1717 (−84 to 63)66 (44 to 80)
  • VE, vaccine effectiveness.

  • a Gaglani M, Pruszynski J, Murthy K, et al. Influenza vaccine effectiveness against 2009 pandemic influenza A (H1N1) virus differed by vaccine type during 2013–2014 in the United States. J Infect Dis. 2016;213(10):1546–1556, Supplemental Table 2.

  • b Centers for Disease Control and Prevention, Advisory Committee on Immunization Practices, presented at June 2015 Meeting.

  • c Jackson L, et al. Influenza vaccine effectiveness in the United States during the 2015-2016 season. N Engl J Med. 2017;377:534-543.