The First Case Report of West Nile Virus-Induced Acute Flaccid Quadriplegia in Canada

Table 1

	WNVND cases, n (%)	WNVNND cases, n (%)	WNVD unclassified cases, n (%)	WNVD case deaths, n (%)	Total cases
WNVD cases reported to PHAC and CDC in Canada and USA, 2002–2017
Canada	1265 (22.6)	4054 (72.4)	284 (5.1)	70 (1.2)	5603
USA	22913 (46.6)	25175 (52.4)	None	2138 (4.4)	48088
WNVND and WNVNND cases reported to PHAC in Canadian provinces bordering and neighboring USA states, 2002–2017
Ontario	573 (45.3)	461 (11.3)		—	1034 (18.5)
Quebec	232 (18.3)	85 (2.1)		—	317 (5.7)
Manitoba	165 (13.0)	746 (18.4)		—	911 (16.3)
Saskatchewan	193 (15.3)	2126 (52.4)		—	2319 (41.4)
Total	1029 (81.3)	3321 (81.9)		—	4350 (77.6)
WNVND and WNVNND cases reported to CDC in USA states bordering and neighboring Canadian provinces, 2002–2017
New York	546 (2.4)	668 (2.7)		—	1214 (2.5)
North Dakota	354 (1.5)	1650 (6.6)		—	2004 (4.2)
South Dakota	521 (2.3)	2360 (9.4)		—	2881 (6.0)
Nebraska	657 (2.9)	3649 (14.5)		—	4306 (9.0)
Wyoming	179 (0.78)	738 (2.9)		—	917 (1.9)
Total	2257 (9.9)	9057 (36.0)		—	11322 (23.5)

Sources: PHAC (http://www.healthycanadians.gc.ca/diseases-conditions-maladies-affections/disease-maladie/west-nile-nil-occidental/surveillance-eng.php); personal communication with PHAC (Dr. Zheng); CDC (http://www.cdc.gov/westnile/statsmaps/index.html). WNVD: West Nile virus disease; WNVND: West Nile virus neuroinvasive disease; WNVNND: West Nile virus nonneuroinvasive disease; PHAC: Public Health Agency of Canada; CDC: Centers for Disease Control and Prevention.