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GP In Hours Syndromic Surveillance System:
England
31 March 2020 Year: 2020 Week: 13
Data to: 29 March 2020In This Issue:
Key messages.
Diagnostic indicators at a glance.
GP practices and denominator population.
National syndromic indicators.
Notes and further information.
Key messages
All indicators decreased, or showed no trend during week 13, however, trends should be interpreted with caution due to changes in advice regarding accessing GP surgeries due to COVID-19.
A Cold Watch System operates in England from 1 November to 31 March each year. As part of the Public Health England Cold Weather Plan for England the PHE Real-time Syndromic Surveillance team will be monitoring the impact of cold weather on syndromic surveillance data during this period. Cold weather alert level (current reporting week): Level 1 Winter preparedness
http://www.metoffice.gov.uk/weather/uk/coldweatheralert/
Diagnostic indicators at a glance:
Indicator Trend Level
Upper respiratory tract infection decreasing below baseline levels
Influenza-like illness decreasing similar to baseline levels
Pharyngitis decreasing below baseline levels
Scarlet fever decreasing below baseline levels
Lower respiratory tract infection decreasing below baseline levels
Pneumonia no trend below baseline levels
Gastroenteritis decreasing below baseline levels
Vomiting decreasing below baseline levels
Diarrhoea decreasing below baseline levels
Asthma decreasing similar to baseline levels
Conjunctivitis decreasing below baseline levels
Mumps decreasing above baseline levels
Measles no trend similar to baseline levels
Rubella no trend similar to baseline levels
Pertussis no trend similar to baseline levels
Chickenpox decreasing below baseline levels
Herpes zoster decreasing below baseline levels
Cellulitis decreasing below baseline levels
Impetigo decreasing below baseline levels
* From week 9, this bulletin no longer includes the historic Moving Epidemic Method (MEM)influenza activity threshold (see notes).
GP practices and denominator population:
**based on the average number of practices and denominator population in the reporting working week.
Year Week GP Practices Reporting** Population size**
2020 13 4,591 41.1 million
GP In Hours
Page 2.
31 March 2020. Year: 2020 Week: 13
Intentionally left blank
* 7-day moving averageadjusted for bank holidays.
1: Upper respiratory
tract infection (URTI)
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, all ages).
0
100
200
300
400
500
600
700
800
900
1000
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 01 02 03 04 05 06 07 08 09 10 11 12 13
2019 2020
Av
era
ge
da
ily
ra
te p
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10
0,0
00
re
gis
tere
d G
P p
ati
en
ts
Year - Week
Under 1 Year 1 to 4 5 to 14 15 to 44 45 to 64 65 to 74 75 plus All ages
1a: Upper respiratory tract infection (URTI) by age
0
20
40
60
80
100
120
140
160
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline URTI
Average daily incidence rate by week per 100,000 population (all England).
GP In Hours
Page 3.
31 March 2020. Year: 2020 Week: 13
2: Influenza-like illness
(ILI)
Daily incidence rates (and 7-day moving average*) per 100,000 population (all England, all ages).
* 7-day moving average adjusted for bank holidays.
2a: Influenza-like illness by age
Average daily incidence rate by week per 100,000 population (all England).
0
2
4
6
8
10
12
14
16
18
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 01 02 03 04 05 06 07 08 09 10 11 12 13
2019 2020
Av
era
ge
da
ily
ra
te p
er
10
0,0
00
re
gis
tere
d G
P p
ati
en
ts
Year - Week
Under 1 Year 1 to 4 5 to 14 15 to 44 45 to 64 65 to 74 75 plus All ages
2b: Influenza-like
illness by PHE
Centre
Average daily incidence rate by week per 100,000 population (all ages).
0
1
2
3
4
5
6
7
8
9
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 01 02 03 04 05 06 07 08 09 10 11 12 13
Av
era
ge
da
ily
ra
te p
er
10
0,0
00
re
gis
tere
d G
P p
ati
en
ts
Week
East Midlands East of England London North East North West South East South West West Midlands Yorkshire and Humber England
0
1
2
3
4
5
6
7
8
9
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline Influenza-like illness
GP In Hours
Page 4.
31 March 2020. Year: 2020 Week: 13
3: Pharyngitis or scarlet fever
* 7-day moving average adjusted for bank holidays.
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, all ages).
4: Scarlet fever
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, based on a denominator population of approximately 5.5 million patients)
4a: Scarlet fever by age
Average daily incidence rate by week per 100,000 population (all England, based on a denominator population of approximately 5.5 million patients).
0
1
2
3
4
5
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 01 02 03 04 05 06 07 08 09 10 11 12 13
2019 2020
Av
era
ge
da
ily
ra
te p
er
10
0,0
00
re
gis
tere
d G
P p
ati
en
ts
Year - Week
Under 1 Year 1 to 4 5 to 14 15 to 44 45 to 64 65 to 74 75 plus All ages
0
5
10
15
20
25
30
35
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline Pharyngitis or scarlet fever
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline Scarlet Fever
GP In Hours
Page 5.
31 March 2020. Year: 2020 Week: 13
5: Lower respiratory tract infection (LRTI)
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, all ages).
* 7-day moving average adjusted for bank holidays.
5a: Lower respiratory
tract infection (LRTI)
by age
Average daily incidence rate by week per 100,000 population (all England).
0
50
100
150
200
250
300
350
400
450
500
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 01 02 03 04 05 06 07 08 09 10 11 12 13
2019 2020
Av
era
ge
da
ily
ra
te p
er
10
0,0
00
re
gis
tere
d G
P p
ati
en
ts
Year - Week
Under 1 Year 1 to 4 5 to 14 15 to 44 45 to 64 65 to 74 75 plus All ages
Intentionally left blank
0
10
20
30
40
50
60
70
80
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline LRTI
GP In Hours
Page 6.
31 March 2020. Year: 2020 Week: 13
6: Pneumonia
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, all ages).
* 7-day moving average adjusted for bank holidays.
6a: Pneumonia by age
0
1
2
3
4
5
6
7
8
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 01 02 03 04 05 06 07 08 09 10 11 12 13
2019 2020
Av
era
ge
da
ily
ra
te p
er
10
0,0
00
re
gis
tere
d G
P p
ati
en
ts
Year - Week
Under 1 Year 1 to 4 5 to 14 15 to 44 45 to 64 65 to 74 75 plus All ages
Average daily incidence rate by week per 100,000 population (all England).
Intentionally left blank
0.0
0.2
0.4
0.6
0.8
1.0
1.2
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline Pneumonia
GP In Hours
Page 7.
31 March 2020. Year: 2020 Week: 13
7: Gastroenteritis
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, all ages).
* 7-day moving average adjusted for bank holidays.
7a: Gastroenteritis by age
Average daily incidence rate by week per 100,000 population (all England).
0
20
40
60
80
100
120
140
160
180
200
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 01 02 03 04 05 06 07 08 09 10 11 12 13
2019 2020
Av
era
ge
da
ily
ra
te p
er
10
0,0
00
re
gis
tere
d G
P p
ati
en
ts
Year - Week
Under 1 Year 1 to 4 5 to 14 15 to 44 45 to 64 65 to 74 75 plus All ages
8: Vomiting
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, all ages).
0
1
2
3
4
5
6
7
8
9
10
11
12
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline Vomiting
0
5
10
15
20
25
30
35
40
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline Gastroenteritis
GP In Hours
Page 8.
31 March 2020. Year: 2020 Week: 13
8a: Vomiting by age
Average daily incidence rate by week per 100,000 population (all England).
* 7-day moving average adjusted for bank holidays.
0
10
20
30
40
50
60
70
80
90
100
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 01 02 03 04 05 06 07 08 09 10 11 12 13
2019 2020
Av
era
ge
da
ily
ra
te p
er
10
0,0
00
re
gis
tere
d G
P p
ati
en
ts
Year - Week
Under 1 Year 1 to 4 5 to 14 15 to 44 45 to 64 65 to 74 75 plus All ages
9: Diarrhoea
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, all ages).
9a. Diarrhoea by age
Average daily incidence rate by week per 100,000 population (all England).
0
10
20
30
40
50
60
70
80
90
100
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 01 02 03 04 05 06 07 08 09 10 11 12 13
2019 2020
Av
era
ge
da
ily
ra
te p
er
10
0,0
00
re
gis
tere
d G
P p
ati
en
ts
Year - Week
Under 1 Year 1 to 4 5 to 14 15 to 44 45 to 64 65 to 74 75 plus All ages
0
2
4
6
8
10
12
14
16
18
20
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline Diarrhoea
GP In Hours
Page 9.
31 March 2020. Year: 2020 Week: 13
10: Asthma
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, all ages).
* 7-day moving average adjusted for bank holidays.
10a: Asthma by age
Average daily incidence rate by week per 100,000 population (all England).
0
1
2
3
4
5
6
7
8
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 01 02 03 04 05 06 07 08 09 10 11 12 13
2019 2020
Av
era
ge
da
ily
ra
te p
er
10
0,0
00
re
gis
tere
d G
P p
ati
en
ts
Year - Week
Under 1 Year 1 to 4 5 to 14 15 to 44 45 to 64 65 to 74 75 plus All ages
11: Conjunctivitis
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, all ages).
0
2
4
6
8
10
12
14
16
18
20
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline Conjunctivitis
0
1
2
3
4
5
6
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline Asthma
GP In Hours
Page 10.
31 March 2020. Year: 2020 Week: 13
12: Mumps
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, all ages).
* 7-day moving average adjusted for bank holidays.
12a: Mumps by age
Average daily incidence rate by week per 100,000 population (all England).
12b: Mumps by PHE
Centre
0
0.1
0.2
0.3
0.4
0.5
0.6
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 01 02 03 04 05 06 07 08 09 10 11 12 13
2019 2020
Av
era
ge
da
ily
ra
te p
er
10
0,0
00
re
gis
tere
d G
P p
ati
en
ts
Year - Week
Under 1 Year 1 to 4 5 to 14 15 to 44 45 to 64 65 to 74 75 plus All ages
Average daily incidence rate by week per 100,000 population (all ages).
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline Mumps
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 01 02 03 04 05 06 07 08 09 10 11 12 13
Av
era
ge
da
ily
ra
te p
er
10
0,0
00
re
gis
tere
d G
P p
ati
en
ts
Week
East Midlands East of England London North East North West South East South West West Midlands Yorkshire and Humber England
GP In Hours
Page 11.
31 March 2020. Year: 2020 Week: 13
* 7-day moving average adjusted for bank holidays.
13: Measles
Daily incidence rate
(and 7-day moving
average*) per 100,000
population (all England,
all ages).
14: Rubella
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, all ages).
Intentionally left blank
0.00
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0.16
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline Measles
0.000
0.005
0.010
0.015
0.020
0.025
0.030
0.035
0.040
0.045
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline Rubella
GP In Hours
Page 12.
31 March 2020. Year: 2020 Week: 13
* 7-day moving average adjusted for bank holidays.
17: Herpes zoster
Daily incidence rate
(and 7-day moving
average*) per 100,000
population (all
England, all ages).
15: Pertussis
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, based on a denominator population of approximately 5.5 million patients)
16: Chickenpox
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, based on a denominator population of approximately 5.5 million patients)
0.0
1.0
2.0
3.0
4.0
5.0
6.0
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline Herpes Zoster
0.0
1.0
2.0
3.0
4.0
5.0
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day moving average baseline chickenpox
0.0
0.1
0.2
0.3
0.4
0.5
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
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00 p
op
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tio
n
weekend bank holiday 7 day moving average baseline pertussis
GP In Hours
Page 13.
31 March 2020. Year: 2020 Week: 13
18: Cellulitis
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, all ages).
* 7-day moving average adjusted for bank holidays.
19: Impetigo
Daily incidence rate (and 7-day moving average*) per 100,000 population (all England, all ages).
Intentionally left blank
0
2
4
6
8
10
12
14
16
18
20
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
ate
pe
r 100,0
00 p
op
ula
tio
n
weekend bank holiday 7 day mov avg baseline Cellulitis
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
31/03/19 28/04/19 26/05/19 23/06/19 21/07/19 18/08/19 15/09/19 13/10/19 10/11/19 08/12/19 05/01/20 02/02/20 01/03/20 29/03/20
Da
ily r
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weekend bank holiday 7 day mov avg baseline Impetigo
GP In Hours
Page 14.
31 March 2020. Year: 2020 Week: 13
Notes and further information
• The Public Health England GP in hours surveillance system is a syndromic surveillance system monitoring community-based morbidity recorded by GP practices.
• GP consultation data are analysed on a daily basis to identify national and regional trends. A statistical algorithm underpins each system, routinely identifying activity that has increased significantly or is statistically significantly high for the time of year. Results from these daily analyses are assessed by the ReSST, along with analysis by age group, and anything deemed of public health importance is alerted by the team.
• This system captures anonymised GP morbidity data from two GP clinical software systems, EMIS, from version 1 of the QSurveillance® database, and TPP SystmOne.
• Baselines represent seasonally expected levels of activity and are constructed from historical data since April 2012. They take into account any known substantial changes in data collection, population coverage or reporting practices. Gastroenteritis, diarrhoea and vomiting baselines also account for changes since the introduction of rotavirus vaccine in July 2013. Baselines are refreshed using the latest data on a regular basis.
Moving Epidemic Method:
• During winter we present Moving Epidemic Method (MEM) influenza thresholds on selected indicators.
• The moving epidemic method or MEM is a standard methodology used for setting influenza thresholds across many European nations.
1
• MEM is used for GP ILI thresholds at a national level and at PHE Centre level and stratified by age band.
• MEM thresholds should be interpreted using 7 day moving averages rather than daily data.
• MEM thresholds currently use six years of historic data (2013-2019). The thresholds are re-calculated every year.
• Baseline (‘pre-epidemic’) thresholds are used alongside other surveillance systems to identify the start of influenza circulating in the community; 40%, 95% and 97.5% intensity thresholds are used to identify when influenza activity moves from low to medium, high or very high.
1Vega T et al. Influenza Other Respir Viruses. 2013;7(4):546-58.
Maps: • From week 40 2019 the levels of influenza-like illness (ILI) rates are illustrated in the bulletin appendix maps. The ILI intensity levels are calculated using MEM.
• The current ILI thresholds are based upon previous influenza seasons from 2012/13 onwards and therefore illustrate activity levels in relation to previous ILI activity recorded in the GPIH system. IILI thresholds presented in the maps should be interpreted with caution and reference made to other GP surveillance systems incorporating more historical data, which are available in the PHE National Influenza Report.
https://www.gov.uk/government/statistics/weekly-national-flu-reports
• The ILI thresholds have been calculated separately for each of the nine PHE Centres to allow for differences between areas e.g. background ILI rates are historically higher in London than other areas of England.
Acknowledgements: We thank and acknowledge the University of Oxford, ClinRisk® and the contribution of
EMIS and EMIS practices. Data source: version 1 of the QSurveillance® database. We thank TPP, ResearchOne and the SystmOne GP practices contributing to this surveillance system.
Contact ReSST: [email protected]
GP In Hours Syndromic Surveillance System Bulletin.
Produced by: PHE Real-time Syndromic Surveillance Team 1
st Floor, 5 St Philips Place, Birmingham, B3 2PW Tel: 0344 225 3560 > Option 4 > Option 2 Fax: 0121 236 2215
Web: https://www.gov.uk/government/collections/syndromic-surveillance-systems-and-analyses
