West Nile Virus: Reported Suspected and Confirmed Cases and Rates


CasesSyndromeMedian Age*Deaths**
NeuroinvasiveWN FeverYrsRange#Case Fatality Rate*
2021 21 18
3
65 (26-87) 0 --
2020 7 6
1
54 (39-87) 1 17%
2019 10 8
2
71 (33-89) 0 --
2018 36 30
6
60.5 (31-88) 2 7%
2017 21 20
1
62 (28-87) 2 10%
2016 6 6
0
49.5 (32-77) 0 --
2015 38 30
8
58 (22-89) 6 20%
2014 15 12 3 59 (36-81) 3 25%
2013 10 8 2 64 (45-81) 2 25%
2012 41 26 15 61.5 (1-88) 7 27%
2011 11 9 2 69 (41-82) 1 11%
2010 42 34 8 64 (19-87) 5 15%
2009 3 3 0 63 (60-73) 1 33%
2008 15 8 7 64 (33-86) 1 13%
2007 18 13 5 75 (41-90) 5 38%
2006 12 8 4 64.5 (44-80) 2 25%
2005 14 11 3 61 (27-84) 3 27%
2004 5 2 3 33.5 (1-66) 0 --
2003 32 31 1 68 (8-93) 7 23%
2002 29 28 1 72 (22-86) 3 11%
2001 9 7 2 51 (44-75) 1 14%
2000 14 14 0 62 (36-87) 1 7%
1999 47 45 2 70 (5-90) 4 9%
Summary 456 377 79 62 (1-93) 57 15%

* Median age and case fatality rate calculated for neuroinvasive cases only.

** Data on deaths may be incomplete; only deaths that are reported to the NYC Department of Health are captured.