West Nile Virus and Other Mosquito-Borne Disease National Surveillance Report - August 16 to August 22, 2015 (Report Week 33)
Summary
West Nile Virus in Canada
Humans: During surveillance week 33, ending on Aug 22, 2015, two (2) human cases of West Nile virus were reported to the Public Health Agency of Canada (the Agency). Of them, one case was reported in Ontario (Toronto) and one in Quebec (Lanaudière).
As of surveillance week 33, a total of 6 human cases have been reported to the Agency: Ontario (3) and Quebec (3). Of them, one (16.7%) was classified as West Nile virus Neurological syndrome, five (83.3%) as West Nile virus Non-neurological syndrome. One of the three cases from Quebec was related to travel outside the province.
Mosquitoes: As of surveillance week 33, 94 mosquito pools have tested positive for West Nile virus in Canada: Ontario (48), Manitoba (28) , Saskatchewan (15) and Quebec (3).
Dead Birds: As of surveillance week 33, the Canadian Wildlife Health Cooperative has reported 22 dead birds that tested positive for West Nile virus. Ontario (14) and Quebec (8).
Domestic Animals: As of surveillance week 33, the Canadian Food Inspection Agency reported 5 horses that tested positive for West Nile virus in Canada: Ontario (2), Manitoba (1), Saskatchewan (1) and Alberta (1).
One horse tested positive for Eastern equine encephalitis virus, from Ontario.
Alternative Formats
Related Topics
West Nile Virus in United States
As of Aug 18, 2015, the Centers for Disease Control and Prevention (CDC) reported 210 human cases of West Nile virus:
Alabama ( 3), Arizona ( 26), Arkansas (5), California (36), Colorado (8 ), Delaware (1 ), District of Columbia (1), Florida (4),Georgia (1), Idaho (4), Iowa (1),Kansas (6), Louisiana ( 8), Maryland (2), Mississippi (11), Montana (1 ), Nebraska (11), New Jersey (3), New Mexico ( 2), New York (1), North Dakota (4 ), Ohio (6 ), Oklahoma (10), Pennsylvania (3 ), South Dakota( 10), Tennessee (2 ), Texas (26), Virginia (1 ), Washington(12) and Wyoming ( 1).
Of these, 126 (60%) were diagnosed as neuroinvasive disease cases, 84 (40%) as non-neuroinvasive disease cases. 5 fatal cases were reported. 75 presumptive viremic blood donors have been identified.
West Nile Fever in the European Union, European Economic Area and Neighbouring Countries
As of Surveillance week 33, the European Centre for Disease Prevention and Control (ECDC) has reported thirteen cases of West Nile fever in humans in the EU Member States and ten cases in the neighboring countries. During the past week, Italy reported four new cases (including one asymptomatic), from Cremona, Parma and Reggio nell’Emilia (2 cases), three provinces already affected this year. Romania reported one case from the newly affected Sibiu County, an area also affected last year.
Hungary reported its first case of West Nile fever from Fejer County. Israel reported two new cases from already affected districts, Tel Aviv and Central district. West Nile virus has been detected in mosquitoes in Lipetskaya and Voronezhskaya oblasts, Russia
Report Weeks of 2015 | |||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | Total | |
Newfoundland and Labrador | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||
Prince Edward Island | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||
New Brunswick | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||
Nova Scotia | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||
Quebec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 3 | |||||||||||||||
Ontario | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 3 | |||||||||||||||
Manitoba | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||
Saskatchewan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||
Alberta | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||
British Columbia | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||
Yukon Territory | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||
Northwest Territory | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||
Nunavut | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||||
Total | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 1 | 0 | 2 | 6 |
Week 33: Aug 16 to Aug 22, 2015 | ||||||
---|---|---|---|---|---|---|
West Nile virus neurological syndrome | West Nile virus non-neurological syndrome | Unclassified/unspecified | Total clinical casesTable 2 Footnote 1 | Number of travel-related casesTable 2 Footnote 2 | West Nile virus asymptomatic infectionTable 2 Footnote 3 | |
Table 2 Footnotes
|
||||||
Newfoundland and Labrador | 0 | 0 | 0 | 0 | 0 | 0 |
Prince Edward Island | 0 | 0 | 0 | 0 | 0 | 0 |
Nova Scotia | 0 | 0 | 0 | 0 | 0 | 0 |
New Brunswick | 0 | 0 | 0 | 0 | 0 | 0 |
Quebec | 1 | 0 | 0 | 1 | 0 | 0 |
Ontario | 0 | 1 | 0 | 1 | 0 | 0 |
Manitoba | 0 | 0 | 0 | 0 | 0 | 0 |
Saskatchewan | 0 | 0 | 0 | 0 | 0 | 0 |
Alberta | 0 | 0 | 0 | 0 | 0 | 0 |
British Columbia | 0 | 0 | 0 | 0 | 0 | 0 |
Yukon Territory | 0 | 0 | 0 | 0 | 0 | 0 |
Northwest Territory | 0 | 0 | 0 | 0 | 0 | 0 |
Nunavut | 0 | 0 | 0 | 0 | 0 | 0 |
Total | 1 | 1 | 0 | 2 | 0 | 0 |
Year to date: January 1 to Aug 22, 2015 | ||||||
Newfoundland and Labrador | 0 | 0 | 0 | 0 | 0 | 0 |
Prince Edward Island | 0 | 0 | 0 | 0 | 0 | 0 |
Nova Scotia | 0 | 0 | 0 | 0 | 0 | 0 |
New Brunswick | 0 | 0 | 0 | 0 | 0 | 0 |
Quebec | 1 | 2 | 0 | 3 | 1 | 0 |
Ontario | 0 | 3 | 0 | 3 | 0 | 0 |
Manitoba | 0 | 0 | 0 | 0 | 0 | 0 |
Saskatchewan | 0 | 0 | 0 | 0 | 0 | 0 |
Alberta | 0 | 0 | 0 | 0 | 0 | 0 |
British Columbia | 0 | 0 | 0 | 0 | 0 | 0 |
Yukon Territory | 0 | 0 | 0 | 0 | 0 | 0 |
Northwest Territory | 0 | 0 | 0 | 0 | 0 | 0 |
Nunavut | 0 | 0 | 0 | 0 | 0 | 0 |
Total | 1 | 5 | 0 | 6 | 1 | 0 |
Report week | |||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | |
Table 3 Footnotes
|
|||||||||||||||||||||||||||||||
2015 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 1 | 0 | 2 | ||||||||||||||
2014 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 4Table 3 Footnote * | 3 | 5 | 6 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
2013 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 2 | 1 | 5 | 5 | 8 | 17 | 11 | 13 | 13 | 11 | 9 | 1 | 6 | 1 | 0 | 4 | 1 | 0 | 1 | 0 |
2012 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 5 | 11 | 16 | 27 | 53 | 63 | 57 | 43 | 43 | 45 | 24 | 30 | 14 | 9 | 5 | 1 | 0 | 0 | 0 | 0 |
2007 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 3 | 4 | 11 | 35 | 36 | 72 | 139 | 424 | 471 | 443 | 287 | 182 | 116 | 71 | 30 | 18 | 10 | 11 | 5 | 4 | 2 | 0 | 0 |
2005 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 4 | 11 | 28 | 28 | 38 | 45 | 27 | 15 | 7 | 12 | 3 | 3 | 1 | 0 | 0 | 0 |
2003 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 5 | 11 | 9 | 27 | 66 | 249 | 323 | 324 | 178 | 107 | 82 | 37 | 14 | 8 | 4 | 3 | 0 | 0 | 0 |
Province / Territory | Report week of 2015 | ||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | Total | |
Table 4.1 Footnotes
|
|||||||||||||||||||||||||||||
Newfoundland and Labrador | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
Prince Edward Island | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
New Brunswick | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
Nova Scotia | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
Quebec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 120 | 127 | 132 | 131 | 129 | 126 | 112 | 125 | 1002 | |||||||||||
Ontario | 0 | 0 | 0 | 0 | 0 | 180 | 356 | 852 | 886 | 954 | 1152 | 1216 | 1219 | 1222 | 1176 | 1168 | 1168 | 11549 | |||||||||||
Manitoba | 0 | 0 | 0 | 0 | 12 | 4 | 87 | 82 | 44 | 75 | 73 | 132 | 139 | 204 | 275 | 195 | 228 | 1550 | |||||||||||
Saskatchewan | 0 | 0 | 0 | 0 | 2 | 0 | 3 | 3 | 10 | 13 | 16 | 40 | 47 | 69 | 67 | 80 | 94 | 444 | |||||||||||
Alberta | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
British Columbia | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
Yukon Territory | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
Northwest Territory | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
Nunavut | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
Total | 0 | 0 | 0 | 0 | 14 | 184 | 446 | 937 | 940 | 1162 | 1368 | 1520 | 1536 | 1624 | 1644 | 1555 | 1615 | 14545 |
Province | Year to date: January 1 to Aug 22, 2015 | ||
---|---|---|---|
Number of positive mosquito pools | Number of mosquito pools tested | Percentage of positive mosquito pools (%) | |
Quebec | 3 | 1002 | 0.30 |
Ontario | 48 | 11549 | 0.42 |
Manitoba | 28 | 1550 | 1.81 |
Saskatchewan | 15 | 444 | 3.38 |
Total | 94 | 14545 | 0.65 |
Report week of 2015 | ||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | Total | |
Table 5 Footnotes
|
||||||||||||||||||||||||||||||||
Newfoundland and Labrador | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||
Prince Edward Island | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||
New Brunswick | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||
Nova Scotia | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||
Quebec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 3 | 0 | 1Table 5 Footnote 1 | 8 | ||||||||||||||
Ontario | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 4 | 1 | 8 | 0 | 0 | 14 | ||||||||||||||
Manitoba | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||
Saskatchewan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||
Alberta | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||
British Columbia | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||
Yukon Territory | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||
Northwest Territory | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||
Nunavut | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||
Total | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 5 | 3 | 11 | 0 | 1 | 22 |
Report week | |||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | |
Table 6 Footnotes
|
|||||||||||||||||||||||||||||||
Numbers positive 2015 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 5 | 3 | 11 | 0 | 1 | ||||||||||||||
Numbers tested 2015 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 6 | 5 | 15 | 7 | 4 | ||||||||||||||
Percentage positive 2015 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 100 | 0 | 0 | 0 | 100 | 83 | 60 | 73 | 0 | 25 | ||||||||||||||
Numbers positive 2014 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2 | 4 | 0 | 2 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Numbers tested 2014 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 41Table 6 Footnote * | 10 | 13 | 9 | 7 | 13 | 6 | 10 | 3 | 1 | 4 | 2 | 1 | 0 | 0 | 0 | 0 | 0 |
Percentage positive 2014 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 22 | 29 | 31 | 0 | 20 | 100 | 0 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Percentage positive 2012 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 33 | 67 | 33 | 67 | 33 | 50 | 67 | 64 | 67 | 33 | 67 | 67 | 55 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Percentage positive 2003 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 6 | 7 | 10 | 17 | 21 | 38 | 35 | 43 | 46 | 45 | 45 | 58 | 29 | 20 | 15 | 8 | 0 | 0 | 0 | 0 |
Page details
- Date modified: