Table. Adjusted vaccine effectiveness estimates for influenza seasons from 2005-2015
Influenza Season?	Reference	Study Site(s)	No. of Patients?	Adjusted Overall VE (%)	95% CI	weight	temp
2004-05	Belongia 2009	WI	762	10	-36, 40	0.018	0.182
2005-06	Belongia 2009	WI	346	21	-52, 59	0.008	0.173
2006-07	Belongia 2009	WI	871	52	22 ,70	0.021	1.080
2007-08	Belongia 2011	WI	1914	37	22, 49	0.046	1.688
2009-10	Griffin 2011	WI, MI, NY, TN	6757	56	23, 75	0.161	9.020
2010-11	Treanor 2011	WI, MI, NY, TN	4757	60	53, 66	0.113	6.804
2011-12	Ohmit 2014	WI, MI, PA, TX, WA	4771	47	36, 56	0.114	5.345
2012-13	McLean 2014	WI, MI, PA, TX, WA	6452	49	43, 55	0.154	7.536
2013-14	Unpublished	WI, MI, PA, TX, WA	5990	51	43, 58	0.143	7.282
2014-15	ACIP presentation, Flannery	WI, MI, PA, TX, WA	9329	19	14, 31	0.222	4.225
		sum:	41949
			average:	40.20
			weighted avg:	43.34
Sources:
http://www.cdc.gov/flu/professionals/vaccination/effectiveness-studies.htm
http://www.cdc.gov/flu/news/updated-vaccine-effectiveness-2014-15.htm