Table 1.

Human cases of WNV infections¹² reported in the USA

Year	Number of human cases	Deaths	Number of presumptive viremic blood donors
1999–2002	4,305	303	NT
2003	9,862	264	818
2004	2,539	100	224
2005	3,000	119	417
2006	4,269	177	361
2007	3,630	124	326
2008	1,356	44	174
2009	720	32	109
2010	1,021	57	117
2011	712	43	137
2012	5,674	286	597
2013	2,469	119	420
2014	2,205	97	344
2015	1,996	111	331
Total	37,131	1,876	4,375

¹Including neuroinvasive disease (such as meningitis or encephalitis) and non-neuroinvasive disease (WN fever).

²Source: CDC, accessed on December 30, 2015.