Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Poliomyelitis eradication wikipedia , lookup
2015–16 Zika virus epidemic wikipedia , lookup
Marburg virus disease wikipedia , lookup
Henipavirus wikipedia , lookup
Eradication of infectious diseases wikipedia , lookup
2009 flu pandemic by country wikipedia , lookup
Communicable Disease Surveillance Unit West Nile Virus Surveillance 2016 Weekly West Nile Virus (WNV) Surveillance Bulletin October 2 to October 8, 2016 Overview of West Nile Virus (WNV) Activity in Toronto: October 2 to October 8, 2016* Indicator Description of activity: October 2 to 8, 2016** No human cases of WNV were reported this week. Description of activity: 2016 Year to date Twenty-two cases have been reported for 2016 to date (19 confirmed and 3 probable). Hospitalizations and deaths There were no hospitalizations or deaths due to West Nile virus this week. Of the 22 reported cases, 14 (64%) have been hospitalized, and three deaths have been reported. Positive mosquito pools† Mosquito pool testing has ended for the season. In total, 38 mosquito pools have tested positive for WNV. Overall WNV activity in Toronto for this week was lower than the activity in the previous week. Reported cases * For more information on WNV activity in Toronto, including fact sheets, larviciding updates, and prevention strategies, please visit http://www.toronto.ca/health/westnile/index.htm ** These terms may not reflect significant changes, but describe overall observed trends. † Includes enzootic and non-enzootic mosquito pools. Table 1. Number of new WNV illness human case reports* by classification and positive mosquito pools for October 2 to October 8, 2016, compared to the cumulative number of reports for 2002 and 2012**. Toronto. Classification Confirmed Probable Total Positive pools October 2 to 8, 2016 0 0 0 0 2016 YTD† 19 3 22 38 2012 YTD 80 13 93 100 2002 YTD 129 31 160 168 Source: Ontario Ministry of Health and Long-Term Care, integrated Public Health Information System (iPHIS) extracted [12/10/2016]. *As indicated by date of entry into iPHIS. **As the number of WNV cases reported to TPH varies from year to year, historical averages are not meaningful for comparison. Peak activity occurred in 2002 and 2012 - those data are presented for comparison. † YTD = Year to date. Counts include cases that travelled outside of Toronto during the incubation period of their disease. Diagnosis status is based on provincial case definitions as described in the Infectious Diseases Protocol, 2009. Weekly WNV Surveillance Bulletin Page 1 of 3 Communicable Disease Surveillance Unit West Nile Virus Surveillance 2016 Figure 1a. Number of reported WNV illness human cases (confirmed and probable) by case defining symptomatology by episode week. Toronto, June 5 to October 8, 2016. 6 Asymptomatic infection Non-neurological syndrome 5 Neurological syndrome Number of reported cases 4 3 2 1 0 Episode week Source: Ontario Ministry of Healthand Long-Term Care, integrated Public health Information system (iPHIS), extracted [12/10/2016]. Data are provisional and are subject to changes and revisions. Figure 1b. Number of reported WNV illness human cases (confirmed and probable) by case defining symptomatology by reported week. Toronto, June 5 to October 8, 2016. 9 8 Neurological syndrome Non-neurological syndrome 7 Asymptomatic infection Number of reported cases 6 5 4 3 2 1 0 Reported week Source: Ontario Ministry of Health and Long-Term Care, integrated Public health Information system (iPHIS), extracted [12/10/2016]. Data are provisional and are subject to changes and revisions. Weekly WNV Surveillance Bulletin Page 2 of 3 Communicable Disease Surveillance Unit West Nile Virus Surveillance 2016 Table 2. Hospitalizations and deaths among reported human cases of WNV illness by age and gender. Toronto, January 1, 2016 to October 8, 2016 compared to 2002 and 2012* Year-to-date (YTD), and demographic characteristics of 2016 YTD cases. Number of cases Hospitalized Deceased** All other cases Total Age in years 2016 YTD 2012 YTD 2002 YTD 14 3 8 22 34 1 59 93 81 10 79 160 Median (min, max) 65 87 58 62 (27 -- 89) (85 -- 89) (31 -- 66) (27 -- 89) Gender Female Male 9 3 5 14 5 0 3 8 Source: Ontario Ministry of Health and Long-Term Care, integrated Public Health Information System (iPHIS), extracted [12/10/2016]. *As the number of WNV cases reported to TPH varies from year to year, historical averages are not meaningful for comparison. Peak activity occurred in 2002 and 2012 - those data are presented for comparison. **Deceased cases who were hospitalized are also counted in the "Hospitalized" cases. Only deceased cases where WNV is indicated as a cause of death on the death certificate are included. Data are provisional and are subject to changes and revisions. For additional WNV information visit: Toronto Public Health, Vectorborne Diseases Program Public Health Ontario: Vector-borne Disease Surveillance Reports Ontario Ministry of Health and Long-Term Care: Infectious Diseases Protocol 2009 and Case Definitions Public Health Agency of Canada Weekly WNV Surveillance Bulletin Page 3 of 3