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. Author manuscript; available in PMC: 2015 Sep 15.
Published in final edited form as: Vaccine. 2014 Aug 1;32(41):5278–5284. doi: 10.1016/j.vaccine.2014.07.084

Figure 3.

Figure 3

Estimated effectiveness of trivalent inactivated influenza vaccination against influenza A(H1N1), A(H3N2) and B viruses in each study year and overall. Estimates were adjusted for age, age squared, and sex, and matched by calendar week. Estimates in 2009–10 and overall were also adjusted for receipt of monovalent H1N1pdm09 vaccine. Estimates of 100% VE with wide 95% confidence intervals for influenza A(H1N1) in 2011–12 and 2012–13, influenza A(H3N2) in 2009–10 and 2010–11, and influenza B in 2012–13 are shown in grey because there were no vaccinated children in the test-positive group.