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Entry title:
Influenza in England
Last updated on Thursday, 25 September 2025 at 04:00pm
Influenza (commonly known as flu) is a respiratory infection.
The rate of Intensive Care Unit (ICU) and High Dependency Unit (HDU) admissions for influenza includes a larger number of NHS trusts in England as it is a mandatory collection. The hospital admission rate data we have for influenza comes from a voluntary network of these trusts (termed a sentinel surveillance system). Find out more about data collection for influenza.
During the autumn and the winter we update influenza healthcare and testing metrics every Thursday at 4pm.
Weekly positivity of people receiving a PCR test (England)
The percentage of people who received a PCR and had at least one positive PCR test result for influenza in the same 7 days. Data is shown by specimen date (the date the sample was collected).
Weekly positivity of people receiving a PCR test data for the percentage of people who received a PCR and had at least one positive PCR test result for influenza in the same 7 days. Data is shown by specimen date (the date the sample was collected).
Up to and including 15 September 2025
Specimen date
Weekly positivity
15 Sep 2025
1.27
8 Sep 2025
1.27
1 Sep 2025
1.97
25 Aug 2025
2.48
18 Aug 2025
1.62
11 Aug 2025
1.33
4 Aug 2025
1.77
28 Jul 2025
1.30
21 Jul 2025
1.49
14 Jul 2025
1.33
7 Jul 2025
1.17
30 Jun 2025
1.18
23 Jun 2025
1.53
16 Jun 2025
1.80
9 Jun 2025
1.31
2 Jun 2025
1.24
26 May 2025
1.54
19 May 2025
1.66
12 May 2025
1.83
5 May 2025
2.25
28 Apr 2025
2.10
21 Apr 2025
2.45
14 Apr 2025
3.45
7 Apr 2025
4.44
31 Mar 2025
5.27
24 Mar 2025
6.78
17 Mar 2025
7.21
10 Mar 2025
7.99
3 Mar 2025
7.71
24 Feb 2025
9.75
17 Feb 2025
10.82
10 Feb 2025
11.33
3 Feb 2025
12.43
27 Jan 2025
13.77
20 Jan 2025
14.47
13 Jan 2025
15.97
6 Jan 2025
18.34
30 Dec 2024
23.67
23 Dec 2024
27.38
16 Dec 2024
22.29
9 Dec 2024
19.07
2 Dec 2024
15.21
25 Nov 2024
10.65
18 Nov 2024
7.36
11 Nov 2024
4.62
4 Nov 2024
3.26
28 Oct 2024
3.11
21 Oct 2024
3.36
14 Oct 2024
2.46
7 Oct 2024
2.59
30 Sep 2024
1.98
23 Sep 2024
1.75
16 Sep 2024
1.53
9 Sep 2024
1.28
2 Sep 2024
1.23
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Weekly positivity of people receiving a PCR test by age (England)
The percentage of people who received a PCR and had at least one positive PCR test result for influenza in the same 7 days, by age. Data is shown by specimen date (the date the sample was collected).
Weekly positivity of people receiving a PCR test by age data for the percentage of people who received a PCR and had at least one positive PCR test result for influenza in the same 7 days, by age. Data is shown by specimen date (the date the sample was collected).
ICU HDU (Intensive Care Unit and High Dependency Unit) admission rates per 100,000 population data for weekly overall influenza hospital ICU HDU rates per 100,000 trust catchment population.
Up to and including 12 May 2025
Date of admission
Admission rate
12 May 2025
0.01
5 May 2025
0.02
28 Apr 2025
0.01
21 Apr 2025
0.01
14 Apr 2025
0.03
7 Apr 2025
0.03
31 Mar 2025
0.05
24 Mar 2025
0.06
17 Mar 2025
0.07
10 Mar 2025
0.09
3 Mar 2025
0.09
24 Feb 2025
0.10
17 Feb 2025
0.10
10 Feb 2025
0.15
3 Feb 2025
0.17
27 Jan 2025
0.16
20 Jan 2025
0.26
13 Jan 2025
0.24
6 Jan 2025
0.31
30 Dec 2024
0.54
23 Dec 2024
0.52
16 Dec 2024
0.42
9 Dec 2024
0.29
2 Dec 2024
0.19
25 Nov 2024
0.10
18 Nov 2024
0.06
11 Nov 2024
0.03
4 Nov 2024
0.04
28 Oct 2024
0.03
21 Oct 2024
0.03
14 Oct 2024
0.02
7 Oct 2024
0.02
30 Sep 2024
0.00
23 Sep 2024
0.01
16 Sep 2024
0.01
9 Sep 2024
0.02
2 Sep 2024
0.01
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ICU HDU admissions rate per 100,000 people by age (England)
Age breakdown of people admitted to ICU or HDU with influenza each week, shown as the rate per 100,000 trust catchment population.
ICU HDU admissions rate per 100,000 people by age data for age breakdown of people admitted to ICU or HDU with influenza each week, shown as the rate per 100,000 trust catchment population.
Up to and including 12 May 2025
Date of admission
0 to 4 years
12 May 2025
0.00
5 May 2025
0.00
28 Apr 2025
0.04
21 Apr 2025
0.07
14 Apr 2025
0.04
7 Apr 2025
0.04
31 Mar 2025
0.15
24 Mar 2025
0.15
17 Mar 2025
0.04
10 Mar 2025
0.22
3 Mar 2025
0.11
24 Feb 2025
0.48
17 Feb 2025
0.27
10 Feb 2025
0.27
3 Feb 2025
0.36
27 Jan 2025
0.18
20 Jan 2025
0.42
13 Jan 2025
0.29
6 Jan 2025
0.15
30 Dec 2024
0.50
23 Dec 2024
0.69
16 Dec 2024
0.59
9 Dec 2024
0.36
2 Dec 2024
0.30
25 Nov 2024
0.07
18 Nov 2024
0.11
11 Nov 2024
0.08
4 Nov 2024
0.11
28 Oct 2024
0.00
21 Oct 2024
0.00
14 Oct 2024
0.00
7 Oct 2024
0.00
30 Sep 2024
0.04
23 Sep 2024
0.00
16 Sep 2024
0.00
9 Sep 2024
0.00
2 Sep 2024
0.00
Date of admission
5 to 14 years
12 May 2025
0.00
5 May 2025
0.02
28 Apr 2025
0.00
21 Apr 2025
0.02
14 Apr 2025
0.06
7 Apr 2025
0.00
31 Mar 2025
0.00
24 Mar 2025
0.07
17 Mar 2025
0.05
10 Mar 2025
0.05
3 Mar 2025
0.09
24 Feb 2025
0.07
17 Feb 2025
0.07
10 Feb 2025
0.17
3 Feb 2025
0.07
27 Jan 2025
0.12
20 Jan 2025
0.28
13 Jan 2025
0.14
6 Jan 2025
0.12
30 Dec 2024
0.25
23 Dec 2024
0.28
16 Dec 2024
0.41
9 Dec 2024
0.24
2 Dec 2024
0.11
25 Nov 2024
0.05
18 Nov 2024
0.04
11 Nov 2024
0.07
4 Nov 2024
0.03
28 Oct 2024
0.04
21 Oct 2024
0.09
14 Oct 2024
0.00
7 Oct 2024
0.00
30 Sep 2024
0.02
23 Sep 2024
0.00
16 Sep 2024
0.00
9 Sep 2024
0.03
2 Sep 2024
0.00
Date of admission
15 to 44 years
12 May 2025
0.01
5 May 2025
0.00
28 Apr 2025
0.00
21 Apr 2025
0.01
14 Apr 2025
0.03
7 Apr 2025
0.01
31 Mar 2025
0.02
24 Mar 2025
0.06
17 Mar 2025
0.06
10 Mar 2025
0.07
3 Mar 2025
0.07
24 Feb 2025
0.03
17 Feb 2025
0.08
10 Feb 2025
0.10
3 Feb 2025
0.15
27 Jan 2025
0.11
20 Jan 2025
0.17
13 Jan 2025
0.18
6 Jan 2025
0.18
30 Dec 2024
0.28
23 Dec 2024
0.27
16 Dec 2024
0.30
9 Dec 2024
0.22
2 Dec 2024
0.08
25 Nov 2024
0.06
18 Nov 2024
0.01
11 Nov 2024
0.01
4 Nov 2024
0.02
28 Oct 2024
0.03
21 Oct 2024
0.00
14 Oct 2024
0.02
7 Oct 2024
0.01
30 Sep 2024
0.00
23 Sep 2024
0.01
16 Sep 2024
0.02
9 Sep 2024
0.01
2 Sep 2024
0.01
Date of admission
45 to 54 years
12 May 2025
0.00
5 May 2025
0.03
28 Apr 2025
0.03
21 Apr 2025
0.00
14 Apr 2025
0.03
7 Apr 2025
0.05
31 Mar 2025
0.00
24 Mar 2025
0.05
17 Mar 2025
0.11
10 Mar 2025
0.03
3 Mar 2025
0.12
24 Feb 2025
0.15
17 Feb 2025
0.16
10 Feb 2025
0.19
3 Feb 2025
0.17
27 Jan 2025
0.15
20 Jan 2025
0.15
13 Jan 2025
0.16
6 Jan 2025
0.47
30 Dec 2024
0.65
23 Dec 2024
0.69
16 Dec 2024
0.48
9 Dec 2024
0.39
2 Dec 2024
0.27
25 Nov 2024
0.09
18 Nov 2024
0.13
11 Nov 2024
0.02
4 Nov 2024
0.03
28 Oct 2024
0.00
21 Oct 2024
0.05
14 Oct 2024
0.05
7 Oct 2024
0.03
30 Sep 2024
0.00
23 Sep 2024
0.00
16 Sep 2024
0.00
9 Sep 2024
0.00
2 Sep 2024
0.03
Date of admission
55 to 64 years
12 May 2025
0.00
5 May 2025
0.00
28 Apr 2025
0.00
21 Apr 2025
0.00
14 Apr 2025
0.02
7 Apr 2025
0.09
31 Mar 2025
0.16
24 Mar 2025
0.03
17 Mar 2025
0.09
10 Mar 2025
0.07
3 Mar 2025
0.13
24 Feb 2025
0.14
17 Feb 2025
0.04
10 Feb 2025
0.13
3 Feb 2025
0.17
27 Jan 2025
0.27
20 Jan 2025
0.50
13 Jan 2025
0.34
6 Jan 2025
0.41
30 Dec 2024
0.95
23 Dec 2024
0.93
16 Dec 2024
0.50
9 Dec 2024
0.42
2 Dec 2024
0.35
25 Nov 2024
0.26
18 Nov 2024
0.05
11 Nov 2024
0.04
4 Nov 2024
0.12
28 Oct 2024
0.07
21 Oct 2024
0.05
14 Oct 2024
0.00
7 Oct 2024
0.03
30 Sep 2024
0.00
23 Sep 2024
0.03
16 Sep 2024
0.00
9 Sep 2024
0.03
2 Sep 2024
0.00
Date of admission
65 to 74 years
12 May 2025
0.03
5 May 2025
0.02
28 Apr 2025
0.02
21 Apr 2025
0.00
14 Apr 2025
0.02
7 Apr 2025
0.02
31 Mar 2025
0.06
24 Mar 2025
0.06
17 Mar 2025
0.04
10 Mar 2025
0.13
3 Mar 2025
0.04
24 Feb 2025
0.13
17 Feb 2025
0.07
10 Feb 2025
0.18
3 Feb 2025
0.33
27 Jan 2025
0.29
20 Jan 2025
0.32
13 Jan 2025
0.35
6 Jan 2025
0.55
30 Dec 2024
0.80
23 Dec 2024
0.88
16 Dec 2024
0.40
9 Dec 2024
0.27
2 Dec 2024
0.32
25 Nov 2024
0.15
18 Nov 2024
0.09
11 Nov 2024
0.04
4 Nov 2024
0.02
28 Oct 2024
0.00
21 Oct 2024
0.04
14 Oct 2024
0.00
7 Oct 2024
0.02
30 Sep 2024
0.00
23 Sep 2024
0.00
16 Sep 2024
0.00
9 Sep 2024
0.00
2 Sep 2024
0.00
Date of admission
75 to 84 years
12 May 2025
0.08
5 May 2025
0.15
28 Apr 2025
0.10
21 Apr 2025
0.03
14 Apr 2025
0.04
7 Apr 2025
0.14
31 Mar 2025
0.14
24 Mar 2025
0.14
17 Mar 2025
0.14
10 Mar 2025
0.25
3 Mar 2025
0.07
24 Feb 2025
0.10
17 Feb 2025
0.18
10 Feb 2025
0.22
3 Feb 2025
0.14
27 Jan 2025
0.17
20 Jan 2025
0.27
13 Jan 2025
0.44
6 Jan 2025
0.78
30 Dec 2024
1.36
23 Dec 2024
0.64
16 Dec 2024
0.86
9 Dec 2024
0.34
2 Dec 2024
0.28
25 Nov 2024
0.11
18 Nov 2024
0.14
11 Nov 2024
0.00
4 Nov 2024
0.00
28 Oct 2024
0.04
21 Oct 2024
0.03
14 Oct 2024
0.00
7 Oct 2024
0.07
30 Sep 2024
0.00
23 Sep 2024
0.00
16 Sep 2024
0.00
9 Sep 2024
0.07
2 Sep 2024
0.00
Date of admission
85 years and over
12 May 2025
0.00
5 May 2025
0.00
28 Apr 2025
0.00
21 Apr 2025
0.08
14 Apr 2025
0.00
7 Apr 2025
0.00
31 Mar 2025
0.00
24 Mar 2025
0.00
17 Mar 2025
0.00
10 Mar 2025
0.00
3 Mar 2025
0.08
24 Feb 2025
0.00
17 Feb 2025
0.00
10 Feb 2025
0.09
3 Feb 2025
0.16
27 Jan 2025
0.25
20 Jan 2025
0.16
13 Jan 2025
0.41
6 Jan 2025
0.08
30 Dec 2024
0.24
23 Dec 2024
0.33
16 Dec 2024
0.17
9 Dec 2024
0.16
2 Dec 2024
0.00
25 Nov 2024
0.00
18 Nov 2024
0.00
11 Nov 2024
0.00
4 Nov 2024
0.00
28 Oct 2024
0.00
21 Oct 2024
0.00
14 Oct 2024
0.00
7 Oct 2024
0.00
30 Sep 2024
0.00
23 Sep 2024
0.00
16 Sep 2024
0.00
9 Sep 2024
0.00
2 Sep 2024
0.00
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Hospital admission rates per 100,000 population (England)
Hospital admission rate per 100,000 people by age data for age breakdown of people admitted to hospital with influenza each week, shown as the rate per 100,000 trust catchment population.