Flu Bulletin - 2018/19 - Week 01

Data presented are for Week 01 (December 30th, 2018 to January 5th, 2019) and was extracted on January 7th, 2019. Data presented represent a snapshot of the information at the time of extraction and may differ from previous or subsequent reports.

Table 1. Summary of activity for current reporting week

Indicator	Trend From Previous Week	Current Week	Previous Week	Season
Number of lab-confirmed influenza cases	Lower	15	12	83
Number of influenza outbreaks in institutions	Similar	0	0	0
+Percent positivity of lab specimens tested for Influenza A (Erie St. Clair Region)	Lower	22% (Week 52)	32% (Week 51)	15%
+Percent positivity of lab specimens tested for Influenza B (Erie St. Clair Region)	Similar	0% (Week 52)	0% (Week 51)	0%
*Percent of emergency department visits due to influenza-like illness or respiratory syndrome	Lower	11%	14%	7%

⁺Includes Windsor-Essex, Chatham-Kent and Lambton. For the trend comparison, the previous week is compared to the week prior (i.e. if the reporting week is 45, week 44 is compared to week 43). The values for percent positivity for the season are as of the end of the previous reporting week.

^*Historical values are displayed in the last figure (see below).

Table 2. Number of lab-confirmed influenza cases for report week and season

Causative Agent	Current Week (N)	Current Week (%)	Season (N)	Season (%)
Influenza A	15	100%	83	100%
Influenza B	0	0%	0	0%
Influenza A & B	0	0%	0	0%
Total	15	100%	83	100%

Table 3. Outbreaks of influenza in institutions

Causative Agent	Current Week (N)	Current Week (%)	Season (N)	Season (%)
Influenza A+	0	0%	0	0%
Influenza B+	0	0%	0	0%
Influenza A & B	0	0%	0	0%
Total	0	-	0	-

⁺Includes combined outbreaks of Influenza and other microorganisms. 

Influenza cases - 2018-19 - Week 01

Circulating strains - 2018-19 - Week 01

ED visits - 2018-19 - Week 01