Weekly flu update

flu update

Weekly flu update

Number of laboratory-confirmed flu notifications for week ending: 10 January 2021

WeekWeek endingNotifications
1 Sunday, 10 January 2021 1
53 Sunday, 3 January 2021 1
52 Sunday, December 27 1
51 Sunday, December 20 1

Confirmed cases at Sunday January 10 2021: 1 [1 influenza A and 0 influenza B]

View previous notifications - weeks 1 to 50 >

WeekWeek endingNotifications
50 Sunday, December 13 0
49 Sunday, December 6 2
48 Sunday, November 29 0
47 Sunday, November 22 0
46 Sunday, November 15 0
45 Sunday, November 8 0
44 Sunday, November 1 0
43 Sunday, October 25 1
42 Sunday, October 18 0
41 Sunday, October 11 0
40 Sunday, October 4 1
39 Sunday, September 27 0
38 Sunday, September 20 0
37 Sunday, September 13 0
36 Sunday, September 6 0
35 Sunday, August 30 0
34 Sunday, August 23 0
33 Sunday, August 16 1
32 Sunday, August 9 0
31 Sunday, August 2 0
30 Sunday, July 26 0
29 Sunday, July 19 0
28 Sunday, July 12 1
27 Sunday, July 5 1
26 Sunday, June 28 0
25 Sunday, June 21 1
24 Sunday, June 14 0
23 Sunday, June 7 1
22 Sunday, May 31 0
21 Sunday, May 24 1
20 Sunday, May 17 1
19 Sunday, May 10 3
18 Sunday, May 3 2
17 Sunday, April 26 0
16 Sunday, April 19 1
15 Sunday, April 12 0
14 Sunday, April 5 0
13 Sunday, March 29 5
12 Sunday, March 22 8
11 Sunday, March 15 11
10 Sunday, March 8 16
9 Sunday, March 1 12
8 Sunday, February 23 8
7 Sunday, February 16 15
6 Sunday, February 9 13
5 Sunday, February 2 20
4 Sunday, January 26 8
3 Sunday, January 19 11
2 Sunday, January 12 22
1 Sunday, January 5 4

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 influenza cases notified in Tasmania for each week of the year.  Lines for each of the years 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 shows that the peak of the flu season generally occurs between July and October. The line for 2017 indicates a year of high flu activity in Tasmania with a weekly peak above 450 flu cases occurring during August and September 2017. The line for 2018 shows a year of very low flu activity with a peak of approximately 25 flu cases during early October 2018.  The line for 2019 indicates that weekly flu cases were well above baseline levels between the middle of February and the middle of July. Activity was high early in the year with a high of 109 cases mid-April. Activity then decreased and increased steadily from 1 June to mid-July before decreasing again until the start of August. Weekly flu cases peaked again with a high of 180 cases during the middle of August before decreasing to the end of the year.  The line indicating flu cases in Tasmania for 2020 shows a higher number of cases for January and February compared to the three-year average 2017 to 2019. Notifications decreased in March coinciding with the social distancing policies implemented in response to the COVID-19 pandemic and remained low throughout the year.

Figure 1. Notifications of influenza in Tasmania, by week, 1 January 2017 to 10 January 2021.