West Nile Virus and Other Mosquito-Borne Disease National Surveillance Report - Aug 2 to Aug 8, 2015 (Report Week 31)
Summary
West Nile Virus in Canada
Humans: During surveillance week 31 (Aug 2 to Aug 8, 2015), one human case from Quebec was reported to the Public Health Agency of Canada.
As of surveillance week 31, a total of four human cases of West Nile virus have been reported: Ontario (2), Quebec (2). One of the cases from Quebec was related to travel outside the province.
Mosquitoes: As of surveillance week 31, 47 mosquito pools have tested positive for West Nile virus in Canada: Ontario (23) , Manitoba (14) , Saskatchewan (9), Quebec (1).
Dead Birds: As of surveillance week 31, the Canadian Wildlife Health Cooperative has reported 21 dead birds that tested positive for West Nile virus. Ontario (14) and Quebec (7).
Domestic Animals: As of surveillance week 31, the Canadian Food Inspection Agency reported two horses, that tested positive for West Nile virus in Canada: one from Saskatchewan and one from Ontario
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Related Topics
West Nile Virus Human Disease Cases in the United States
As of August 4, the Centers for Disease Control and Prevention (CDC) have reported 90 human cases of West Nile virus:
Alabama (1), Arizona (17), Arkansas (1) Colorado (1), California (8), Colorado (3), Delaware (1), Florida (3), Idaho (2), Kansas (4), Louisiana (3), Maryland (1), Mississippi (3), Montana (1), Nebraska (6), New Mexico (1), North Dakota (1), Ohio (2), Oklahoma (8), Pennsylvania (1), South Dakota (5), Texas (8), Virginia (1), Washington (7) and Wyoming (1).
Of these, 50 (55.6%) were diagnosed as neuroinvasive disease cases, 40 (44.4%) as non-neuroinvasive disease cases. 3 deaths were reported. Forty one (41) presumptive viremic blood donors have been identified.
West Nile Fever in the European Union, European Economic Area and Neighbouring Countries
As of Surveillance week 31, the European Centre for Disease Prevention and Control (ECDC) has reported two human case of West Nile fever: one in Bulgaria and one in Italy. In neighbouring countries, two cases in Israel were reported.
FIGURE 1: West Nile Virus clinical cases and asymptomatic infections, by Province/Territory and by report week, 2015 season
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 | |
Newfoundland and Labrador | 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 | ||||||||||||||||
New Brunswick | 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 | ||||||||||||||||
Quebec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | ||||||||||||||||
Ontario | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | ||||||||||||||||
Manitoba | 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 | ||||||||||||||||
Alberta | 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 | ||||||||||||||||
Yukon Territory | 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 | ||||||||||||||||
Nunavut | 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 |
Week 31: Aug 2 to Aug 8, 2015 | ||||||
---|---|---|---|---|---|---|
West Nile virus neurological syndrome | West Nile virus non-neurological syndrome | Unclassified/unspecified | Total clinical casesTable 2 Footnote1 | Number of travel-related casesTable 2 Footnote2 | West Nile virus asymptomatic infectionTable 2 Footnote3 | |
Table 2 Footnotes
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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 | 0 | 2 | 0 | 2 | 1 | 0 |
Ontario | 0 | 0 | 0 | 0 | 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 | 0 | 2 | 0 | 2 | 1 | 0 |
Year to date: January 1 to Aug 8, 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 | 0 | 2 | 0 | 2 | 1 | 0 |
Ontario | 0 | 0 | 2 | 2 | 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 | 0 | 2 | 2 | 4 | 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
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2015 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 1 | ||||||||||||||||
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 |
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
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Newfoundland and Labrador | 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 | |||||||||||||
New Brunswick | 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 | |||||||||||||
Quebec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 120 | 127 | 132 | 131 | 129 | 126 | 765 | |||||||||||||
Ontario | 0 | 0 | 0 | 0 | 0 | 180 | 356 | 852 | 886 | 954 | 1152 | 1216 | 1219 | 1222 | 1176 | 9213 | |||||||||||||
Manitoba | 0 | 0 | 0 | 0 | 12 | 4 | 87 | 82 | 44 | 75 | 73 | 132 | 139 | 204 | 275 | 1127 | |||||||||||||
Saskatchewan | 0 | 0 | 0 | 0 | 2 | 0 | 3 | 3 | 10 | 13 | 15 | 40 | 47 | 69 | 67 | 270 | |||||||||||||
Alberta | 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 | |||||||||||||
Yukon Territory | 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 | |||||||||||||
Nunavut | 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 | 11375 |
Province | Year to date: January 1 to Aug 8, 2015 | ||
---|---|---|---|
Number of positive mosquito pools | Number of mosquito pools tested | Percentage of positive mosquito pools (%) | |
Quebec | 1 | 765 | 0.13 |
Ontario | 23 | 9213 | 0.25 |
Manitoba | 14 | 1127 | 1.24 |
Saskatchewan | 9 | 270 | 3.33 |
Total | 47 | 11,375 | 0.41 |
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
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Newfoundland and Labrador | 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 | ||||||||||||||||
New Brunswick | 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 | ||||||||||||||||
Quebec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 3 | 7 | ||||||||||||||||
Ontario | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 4 | 1 | 8 | 14 | ||||||||||||||||
Manitoba | 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 | ||||||||||||||||
Alberta | 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 | ||||||||||||||||
Yukon Territory | 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 | ||||||||||||||||
Nunavut | 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 | 21 |
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
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Numbers positive 2015 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 5 | 3 | 11 | ||||||||||||||||
Numbers tested 2015 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 6 | 5 | 15 | ||||||||||||||||
Percentage positive 2015 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 100 | 0 | 0 | 0 | 100 | 83 | 60 | 73 | ||||||||||||||||
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 |
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