Table 1.

Vaccine Effectiveness Estimates By Season

Season	Number of Subjects+	Adjusted VE (95% CI)	Reference
2004–2005	762	10 (−36,40)	[29]
2005–2006	346	21 (−52,59)	[29]
2006–2007	871	52 (22,70)	[29]
2007–2008	1,914	37 (22,49)	[33]
2008–2009	6,713	41 (30,50)	Unpublished
2009–2010	6,757	56 (23,75)	[34]
2010–2011	4,757	60 (53,66)	[35]
2011–2012	4,771	47 (36,56)	[36]
2012–2013	6,452	49 (43,55)	[37]
2013–2014	5,999	52 (44,59)	[38]
2014–2015	9,311	19 (10,27)	[20]
2015–2016*	6,879	48* (41,55*)	[21]
2016–2017**	7,410	39** (32,46)	Unpublished final estimates.

^*Estimate from November 2, 2015 – April 15, 2016

^**Interim 2016–2017 VE estimates (April 20, 2016 – April 9, 2017)

⁺Number of patients used in VE estimate

Table adapted from reference 1 - Centers for Disease Control and Prevention. Seasonal Influenza Vaccine Effectiveness, 2005–2018.