Weekly flu update

Weekly flu update

Number of laboratory-confirmed flu notifications for week ending: 16 June 2019

Sunday 16 June81
Sunday 9 June80
Sunday 2 June61
Sunday 26 May69

2019 YTD Total at Sunday 16 June:
1 171 [1 121 influenza A and 50 influenza B]

Figure 1 is a line graph with a horizontal axis indicating the 52 weeks of the year. The vertical axis indicates the number of laboratory confirmed flu cases notified in Tasmania for each week of the year.  Lines for each of the four years 2015, 2016, 2017 and 2018 each indicate low baseline flu activity between January and May as well as between November to December. The line for each year indicates the peak of the flu season usually occurs between July and October. Between 2015 to 2018, 2017 indicates the year of highest flu activity in Tasmania with a weekly peak above 450 flu cases occurring during August and September 2017. The line for 2018 indicates a year of very low flu activity with a peak of approximately 25 flu cases during early October 2018.  The line indicating flu cases in Tasmania during 2019 ends at week 24: the second week of June. This line indicates that weekly flu cases have been well above baseline levels since the middle of February. A peak in activity of 108 flu cases occurred in week 16 (mid-April). Weekly flu cases have since declined. There were 81 flu cases notified during week 24.

Figure 1: Flu notifications 2019 year to date and notifications 2015-18.