PEI Weekly Influenza Summary 2017-2018 Season

Week 19 – May 6 - May 12, 2018

Summary

  • There was sporadic flu activity in PEI during Week 19.
  • Our seasonal total is 319 lab-confirmed cases (134 A/H3; 8 A/pH1N1; 7 A/unsubtyped; 170 B).
  • The median age of cases to date is 62 years.
  • Nationally influenza activity continues to decrease, but parts of Central and Eastern Canada are still reporting localized activity. Detections of influenza A were greater than influenza B.

Epidemiological curve of laboratory data

There was sporadic flu activity in PEI during Week 18. Lab-confirmed influenza tests are just an indication of greater influenza activity as many individuals with influenza do not seek medical attention.

Graph of lab-confirmed flu cases for PEI for the 2017-2018 Influenza season.

 

Positive influenza test results, current week and cumulative 2017-18 season
Lab-confirmed cases

Current Week (19)

Cumulative 2017-18
Influenza A 0 149
          A/pH1N1 0 8
          A/H3 0 134
          A/unsubtyped 0 7
Influenza B 1 170
Total Influenza 1 319

 

Respiratory outbreaks, current week and cumulative 2017-18 season
Respiratory Outbreaks Current Week (19) Cumulative 2017-18
Influenza A 0 5
          A/pH1N1 0 0
          A/H3 0 0
          A/unsubtyped 0 5
Influenza B 0 10
ILI1 0 1
Other Respiratory 0 0
Total Outbreaks 0 16

1 ILI:  Influenza like illness

 

Severe outcome surveillance, current week and cumulative 2017-18 season
Severe Outcome Current Week (19) Cumulative 2017-18
Hospitalizations1 1 132
ICU 0 13
Deaths2 0 6

1 Hospitalization data is gathered through infection prevention and control practitioners at each Island hospital. Data includes ICU cases.

2 Deaths include individuals with a positive influenza test result. Influenza may not have been the major contributing cause of death.

 

 

Definitions (based on national Fluwatch definitions)

Activity levels: 
  1. No activity: no lab-confirmed influenza detections in the reporting week, however, sporadically occurring ILI may be reported
  2. Sporadic: sporadically occurring ILI and lab-confirmed influenza detection(s) with no outbreaks detected within the influenza surveillance region
  3. Localized: evidence of increased ILI; lab-confirmed influenza detection(s); outbreaks in 1 county only
  4. Widespread: evidence of increased ILI; lab-confirmed influenza detection(s); outbreaks in more than 1 county
Outbreaks:
  • Hospitals and Residential institutions: 2 or more cases of ILI occurring within a 7 day period, with at least 1 lab- confirmed case
  • Schools, Workplaces and other: absenteeism greater than 10% higher than expected which is most likely due to ILI
Links

Fluwatch - Public Health Agency of Canada

PEI Influenza Summary 2016-17 Season

2015-16 Season Influenza Summary

PEI Influenza Summary 2014-2015 Season

 

Published date: 
May 16, 2018
Health and Wellness department logo

General Inquiries

Department of Health and Wellness
4th Floor North, Shaw Building
105 Rochford Street
Charlottetown, PE   C1A 7N8

Phone: (902) 368-6414
Fax: (902) 368-4121

healthweb@gov.pe.ca