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United Kingdom - 2013-2014 Influenza Surveillance Reports

Re: United Kingdom - 2013-2014 Influenza Surveillance Reports

PHE Weekly National Influenza Report
Summary of UK surveillance of influenza and other seasonal respiratory
illnesses
6 March 2014 ? Week 10 report (up to week 9 data)

Summary


Influenza continues to circulate as evidenced by ongoing influenza-confirmed ICU/HDU and hospital
admissions. A letter has been issued recommending the use of antivirals where appropriate.
 Overall weekly influenza GP consultation rates across the UK
o In week 9 (ending 2 March 2014), overall weekly influenza GP consultations remained low in
England (3.7 per 100,000), Wales (6.8 per 100,000), Scotland (21.3 per 100,000) and Northern
Ireland (24.1 per 100,000)).
o In week 9 syndromic surveillance indicators for influenza remain stable and similar to seasonally
expected levels.
o Ten new acute respiratory influenza outbreaks have been reported in the past seven days across
the UK (two in care homes (one A(H3) and one A(not subtyped)), seven in hospitals (three
A(H1N1)pdm09, three A(not subtyped) and one influenza A(H3)/parainfluenza) and one in a school
(not tested).
 Virology
o In week 9 2014, 156 influenza positive detections were recorded through the DataMart scheme (88
A(H1N1)pdm09, 35 A(H3), 32 A(not subtyped) and one B, a positivity of 18.9% compared to 17.4%
in week 8), with the highest positivity reported in 45-64 year olds (25.3%).
o 17 samples were positive for influenza through the English GP sentinel schemes (11
A(H1N1)pdm09 and six A(H3), positivity of 30%).
 Disease severity and mortality
o 42 new admissions to ICU/HDU with confirmed influenza (26 A(H1N1)pdm09 and 16 A unknown
subtype) and five confirmed influenza deaths were reported through the USISS mandatory ICU
surveillance scheme across the UK (136 Trusts in England) in week 9. 69 new hospitalised
confirmed influenza cases were reported through the USISS sentinel hospital network across
England (27 Trusts).
o In week 9 2014, no excess all-cause mortality by week of death was seen across the UK through
the EuroMOMO algorithm.
 Vaccination
o In the final monthly collection up to 31 January 2014, provisional cumulative seasonal influenza
vaccine uptake from 99.8% of GP practices was 73.2% in 65 years and over (73.4% in 2012/13),
52.3% in under 65 year olds at risk (51.3% in 2012/13), 39.8% in all pregnant women (40.3% in
2012/13), 42.6% in all 2 year olds and 39.6% in all 3 year olds.
o Provisional data from the final monthly collection of influenza vaccine uptake by frontline healthcare
workers show 54.8% were vaccinated by 31 January 2014 from 99.3% of Trusts, compared to
45.9% in 2012/13.
o WHO has published recommendations for the composition of influenza virus vaccines for use in the
2014/15 northern hemisphere influenza season.
 International situation
o Overall influenza activity in North America remains elevated but is decreasing.
o Influenza transmission is continuing across the EU/EEA region with considerable variation
between countries.
...
 Number of new admissions and fatal confirmed influenza cases in ICU/HDU (USISS mandatory ICU scheme),
UK (week 9)
-In week 9, 42 new admissions to ICU/HDU with confirmed influenza infection (26 A(H1N1)pdm09 and 16 A unknown
subtype) were reported across the UK (136/156 Trusts in England) through the USISS mandatory ICU scheme
(Figures 10 and 11) compared to 65 in week 8. Five new confirmed influenza deaths were reported in week 9 2014. A
total of 484 admissions (250 A(H1N1)pdm09, 210 A(unknown), 13 A(H3N2) and 11 B) and 38 confirmed influenza
deaths have been reported since week 40 2013.
...
http://www.hpa.org.uk/webc/HPAwebFile/HPAweb_C/1317140877996
 
Re: United Kingdom - 2013-2014 Influenza Surveillance Reports

PHE Weekly National Influenza Report
Summary of UK surveillance of influenza and other seasonal respiratory
illnesses
13 March 2014 ? Week 11 report (up to week 10 data)

Summary

Influenza continues to circulate as evidenced by ongoing influenza-confirmed ICU/HDU and hospital
admissions. A letter has been issued recommending the use of antivirals where appropriate.
 Overall weekly influenza GP consultation rates across the UK
o In week 10 (ending 9 March 2014), overall weekly influenza GP consultations remained low in
England (2.9 per 100,000), Wales (5.5 per 100,000), Scotland (14.4 per 100,000) and Northern
Ireland (35.0 per 100,000)).
o In week 10 syndromic surveillance indicators for influenza remain stable and similar to seasonally
expected levels.
o Nine new acute respiratory influenza outbreaks have been reported in the past seven days across
the UK (three in care homes (two A(H1N1)pdm09 and one A(not subtyped)), five in hospitals (four
A(H1N1)pdm09, and one A(H3)) and one in a school (not tested).
 Virology
o In week 10 2014, 143 influenza positive detections were recorded through the DataMart scheme
(89 A(H1N1)pdm09, 23 A(H3), 30 A(not subtyped) and one B, a positivity of 16.1% compared to
18.9% in week 9), with the highest positivity reported in 15-44 year olds (20.8%).
o 19 samples were positive for influenza through the English GP sentinel schemes (14
A(H1N1)pdm09 and five A(H3), positivity of 43%).
 Disease severity and mortality
o 49 new admissions to ICU/HDU with confirmed influenza (24 A(H1N1)pdm09, four A(H3N2) and 21
A unknown subtype) and six confirmed influenza deaths were reported through the USISS
mandatory ICU surveillance scheme across the UK (137 Trusts in England) in week 10. 60 new
hospitalised confirmed influenza cases were reported through the USISS sentinel hospital network
across England (28 Trusts).
o In week 10 2014, no excess all-cause mortality by week of death was seen across the UK through
the EuroMOMO algorithm.
 Vaccination
o In the final monthly collection up to 31 January 2014, provisional cumulative seasonal influenza
vaccine uptake from 99.8% of GP practices was 73.2% in 65 years and over (73.4% in 2012/13),
52.3% in under 65 year olds at risk (51.3% in 2012/13), 39.8% in all pregnant women (40.3% in
2012/13), 42.6% in all 2 year olds and 39.6% in all 3 year olds.
o Provisional data from the final monthly collection of influenza vaccine uptake by frontline healthcare
workers show 54.8% were vaccinated by 31 January 2014 from 99.3% of Trusts, compared to
45.9% in 2012/13.
o WHO has published recommendations for the composition of influenza virus vaccines for use in the
2014/15 northern hemisphere influenza season.
 International situation
o Overall influenza activity in North America continues to decrease.
o Influenza transmission is continuing across the EU/EEA region with considerable variation
between countries.
...
In week 10, 49 new admissions to ICU/HDU with confirmed influenza infection (24 A(H1N1)pdm09, four A(H3N2) and
21 A unknown subtype) were reported across the UK (137/156 Trusts in England) through the USISS mandatory ICU
scheme (Figures 10 and 11) compared to 63 in week 9. Six new confirmed influenza deaths were reported in week 10
2014. A total of 566 admissions (290 A(H1N1)pdm09, 245 A(unknown), 19 A(H3N2) and 12 B) and 50 confirmed
influenza deaths have been reported since week 40 2013.
...
http://www.hpa.org.uk/webc/HPAwebFile/HPAweb_C/1317140924794
 
Re: United Kingdom - 2013-2014 Influenza Surveillance Reports

PHE Weekly National Influenza Report
Summary of UK surveillance of influenza and other seasonal respiratory
illnesses
20 March 2014 ? Week 12 report (up to week 11 data)

Summary

Influenza continues to circulate as evidenced by ongoing influenza-confirmed ICU/HDU and hospital
admissions, with indicators suggesting activity is starting to decrease. A letter has been issued
recommending the use of antivirals where appropriate.
 Overall weekly influenza GP consultation rates across the UK
o In week 11 (ending 16 March 2014), overall weekly influenza GP consultations remained low in
England (3.1 per 100,000), Wales (5.5 per 100,000), Scotland (12.7 per 100,000) and Northern
Ireland (39.2 per 100,000)).
o In week 11 syndromic surveillance indicators for influenza remain stable and similar to seasonally
expected levels.
o Six new acute respiratory influenza outbreaks have been reported in the past seven days across
the UK (four in hospitals (all A(H1N1)pdm09), one in a care home (A(not subtyped) and one in a
travelling community).
 Virology
o In week 11 2014, 117 influenza positive detections were recorded through the DataMart scheme
(55 A(H1N1)pdm09, 16 A(H3), 43 A(not subtyped) and three B, a positivity of 15.7% compared to
16.1% in week 10), with the highest positivity reported in 45-64 year olds (20.5%).
o 24 samples were positive for influenza through the English GP sentinel schemes (17
A(H1N1)pdm09, sic A(H3) and one B, positivity of 44%).
 Disease severity and mortality
o 48 new admissions to ICU/HDU with confirmed influenza (27 A(H1N1)pdm09, three A(H3N2) and
18 A unknown subtype) and one confirmed influenza death were reported through the USISS
mandatory ICU surveillance scheme across the UK (133 Trusts in England) in week 11. 20 new
hospitalised confirmed influenza cases were reported through the USISS sentinel hospital network
across England (22 Trusts).
o In week 11 2014, no excess all-cause mortality by week of death was seen across the UK through
the EuroMOMO algorithm.
 Vaccination
o In the final monthly collection up to 31 January 2014, provisional cumulative seasonal influenza
vaccine uptake from 99.8% of GP practices was 73.2% in 65 years and over (73.4% in 2012/13),
52.3% in under 65 year olds at risk (51.3% in 2012/13), 39.8% in all pregnant women (40.3% in
2012/13), 42.6% in all 2 year olds and 39.6% in all 3 year olds.
o Provisional data from the final monthly collection of influenza vaccine uptake by frontline healthcare
workers show 54.8% were vaccinated by 31 January 2014 from 99.3% of Trusts, compared to
45.9% in 2012/13.
o WHO has published recommendations for the composition of influenza virus vaccines for use in the
2014/15 northern hemisphere influenza season.
 International situation
o Overall influenza activity in North America continues to decrease.
o Influenza transmission is continuing across the EU/EEA region with considerable variation
between countries.
...
 Number of new admissions and fatal confirmed influenza cases in ICU/HDU (USISS mandatory ICU scheme),
UK (week 11)
-In week 11, 48 new admissions to ICU/HDU with confirmed influenza infection (27 A(H1N1)pdm09, three A(H3N2)
and 18 A unknown subtype) were reported across the UK (133/156 Trusts in England) through the USISS mandatory
ICU scheme (Figures 10 and 11) compared to 69 in week 10. One new confirmed influenza death was reported in
week 11 2014. A total of 637 admissions (339 A(H1N1)pdm09, 265 A(unknown), 21 A(H3N2) and 12 B) and 52
confirmed influenza deaths have been reported since week 40 2013.
...
http://www.hpa.org.uk/webc/HPAwebFile/HPAweb_C/1317140952644
 
Re: United Kingdom - 2013-2014 Influenza Surveillance Reports

PHE Weekly National Influenza Report
Summary of UK surveillance of influenza and other seasonal respiratory
illnesses
27 March 2014 ? Week 13 report (up to week 12 data)

Summary

Influenza continues to circulate as evidenced by ongoing influenza-confirmed ICU/HDU and hospital
admissions, with indicators suggesting activity is decreasing. A letter has been issued recommending
the use of antivirals where appropriate.
 Overall weekly influenza GP consultation rates across the UK
o In week 12 (ending 23 March 2014), overall weekly influenza GP consultations remained low in
England (1.2 per 100,000), Wales (7.9 per 100,000), Scotland (13.7 per 100,000) and Northern
Ireland (20.6 per 100,000)).
o In week 12 syndromic surveillance indicators for influenza remain similar to seasonally expected
levels.
o One new acute respiratory influenza outbreak has been reported in the past seven days across the
UK (one in a hospital (one A(H1N1)pdm09)).
 Virology
o In week 12 2014, 71 influenza positive detections were recorded through the DataMart scheme (44
A(H1N1)pdm09, eight A(H3), 15 A(not subtyped) and four B, a positivity of 8.4% compared to
15.7% in week 11), with the highest positivity reported in 15-44 year olds (16.4%).
o Seven samples were positive for influenza through the English GP sentinel schemes (seven
A(H1N1)pdm09, positivity of 16%).
 Disease severity and mortality
o 42 new admissions to ICU/HDU with confirmed influenza (20 A(H1N1)pdm09, two A(H3N2), 19 A
(unknown subtype) and one influenza B) and two confirmed influenza deaths were reported through
the USISS mandatory ICU surveillance scheme across the UK (136 Trusts in England) in week 12.
40 new hospitalised confirmed influenza cases were reported through the USISS sentinel hospital
network across England (26 Trusts).
o In week 12 2014, no excess all-cause mortality by week of death was seen across the UK through
the EuroMOMO algorithm.
 Vaccination
o In the final monthly collection up to 31 January 2014, provisional cumulative seasonal influenza
vaccine uptake from 99.8% of GP practices was 73.2% in 65 years and over (73.4% in 2012/13),
52.3% in under 65 year olds at risk (51.3% in 2012/13), 39.8% in all pregnant women (40.3% in
2012/13), 42.6% in all 2 year olds and 39.6% in all 3 year olds.
o Provisional data from the final monthly collection of influenza vaccine uptake by frontline healthcare
workers show 54.8% were vaccinated by 31 January 2014 from 99.3% of Trusts, compared to
45.9% in 2012/13.
o WHO has published recommendations for the composition of influenza virus vaccines for use in the
2014/15 northern hemisphere influenza season.
 International situation
o Overall influenza activity in North America continues to decrease.
o Across Europe, influenza activity remains at a moderate to low-intensity level with a stable or
decreasing trend in the majority of the Member States.
...
Number of new admissions and fatal confirmed influenza cases in ICU/HDU (USISS mandatory ICU scheme),
UK (week 12)
-In week 12, 42 new admissions to ICU/HDU with confirmed influenza infection (20 A(H1N1)pdm09, two A(H3N2), 19
A (unknown subtype) and one influenza B) were reported across the UK (136/156 Trusts in England) through the
USISS mandatory ICU scheme (Figures 10 and 11) compared to 65 in week 11. Two new confirmed influenza deaths
were reported in week 12 2014. A total of 703 admissions (377 A(H1N1)pdm09, 286 A(unknown), 27 A(H3N2) and 13
B) and 58 confirmed influenza deaths have been reported since week 40 2013.
...
http://www.hpa.org.uk/webc/HPAwebFile/HPAweb_C/1317140986432
 
Re: United Kingdom - 2013-2014 Influenza Surveillance Reports

PHE Weekly National Influenza Report
Summary of UK surveillance of influenza and other seasonal respiratory
illnesses
10 April 2014 ? Week 15 report (up to week 14 data)

Summary
Influenza continues to circulate but with declining influenza-confirmed ICU/HDU and hospital
admissions.
 Overall weekly influenza GP consultation rates across the UK
o In week 14 (ending 6 April 2014), overall weekly influenza GP consultations remained low in
England (1.7 per 100,000), Wales (5.9 per 100,000), Scotland (10.4 per 100,000) and Northern
Ireland (32.1 per 100,000)).
o In week 14 syndromic surveillance indicators for influenza remain low.
o Two new acute respiratory outbreaks have been reported in the past seven days across the UK in
hospitals (both influenza A(not subtyped)).
 Virology
o In week 14 2014, 70 influenza positive detections were recorded through the DataMart scheme (28
A(H1N1)pdm09, 24 A(H3), 12 A(not subtyped) and six B, a positivity of 8.2% compared to 10.5% in
week 13), with the highest positivity reported in 15-44 year olds (12.3%).
o Two samples were positive for influenza through the English GP sentinel schemes (one
A(H1N1)pdm09 and one A(H3)), giving a positivity of 7% compared to 21% the previous week).
 Disease severity and mortality
o 20 new admissions to ICU/HDU with confirmed influenza (13 A(H1N1)pdm09, one A(H3N2) and six
A unknown subtype) and six confirmed influenza death were reported through the USISS
mandatory ICU surveillance scheme across the UK (137 Trusts in England) in week 14. 24 new
hospitalised confirmed influenza cases were reported through the USISS sentinel hospital network
across England (26 Trusts).
o In week 14 2014, no excess all-cause mortality by week of death was seen across the UK through
the EuroMOMO algorithm.
 Vaccination
o In the final monthly collection up to 31 January 2014, provisional cumulative seasonal influenza
vaccine uptake from 99.8% of GP practices was 73.2% in 65 years and over (73.4% in 2012/13),
52.3% in under 65 year olds at risk (51.3% in 2012/13), 39.8% in all pregnant women (40.3% in
2012/13), 42.6% in all 2 year olds and 39.6% in all 3 year olds.
o Provisional data from the final monthly collection of influenza vaccine uptake by frontline healthcare
workers show 54.8% were vaccinated by 31 January 2014 from 99.3% of Trusts, compared to
45.9% in 2012/13.
o WHO has published recommendations for the composition of influenza virus vaccines for use in the
2014/15 northern hemisphere influenza season.
 International situation
o Overall influenza activity in North America continues to decrease, with an increasing proportion of
influenza B circulating.
o Across Europe, influenza activity is declining towards interseasonal levels.
...
-In week 14, 20 new admissions to ICU/HDU with confirmed influenza infection (13 A(H1N1)pdm09, one A(H3N2) and
six A unknown subtype) were reported across the UK (137/156 Trusts in England) through the USISS mandatory ICU
scheme (Figures 10 and 11) compared to 48 in week 13. Six new confirmed influenza deaths were reported in week
14 2014. A total of 797 admissions (436 A(H1N1)pdm09, 315 A(unknown), 32 A(H3N2) and 14 B) and 74 confirmed
influenza deaths have been reported since week 40 2013.
...
http://www.hpa.org.uk/webc/HPAwebFile/HPAweb_C/1317141076205
 
Re: United Kingdom - 2013-2014 Influenza Surveillance Reports

PHE Weekly National Influenza Report
Summary of UK surveillance of influenza and other seasonal respiratory
illnesses
17 April 2014 ? Week 16 report (up to week 15 data)

Summary

Influenza activity is continuing to decline.
 Overall weekly influenza GP consultation rates across the UK
o In week 15 (ending 13 April 2014), overall weekly influenza GP consultations remained low in
England (1.4 per 100,000), Wales (6.4 per 100,000), Scotland (7.5 per 100,000) and Northern
Ireland (19.3 per 100,000)).
o In week 15, syndromic surveillance indicators for influenza remain low.
o Three new acute respiratory outbreaks have been reported in the past seven days across the UK:
two in care homes (no result available) and one in a hospital (influenza A(H1N1)pdm09).
 Virology
o In week 15 2014, 45 influenza positive detections were recorded through the DataMart scheme (24
A(H1N1)pdm09, 8 A(H3), 12 A(not subtyped) and one B, a positivity of 5.6% compared to 8.2% in
week 14), with the highest positivity reported in 15-44 year olds (10.1%).
o No samples were positive for influenza through the English GP sentinel schemes (positivity of 0%
compared to 15% the previous week).
 Disease severity and mortality
o 16 new admissions to ICU/HDU with confirmed influenza (10 A(H1N1)pdm09, three A(H3N2) and
three A unknown subtype) and one confirmed influenza death were reported through the USISS
mandatory ICU surveillance scheme across the UK (128 Trusts in England) in week 15. 19 new
hospitalised confirmed influenza cases were reported through the USISS sentinel hospital network
across England (24 Trusts).
o In week 15 2014, no excess all-cause mortality by week of death was seen across the UK through
the EuroMOMO algorithm.
 Vaccination
o In the final monthly collection up to 31 January 2014, provisional cumulative seasonal influenza
vaccine uptake from 99.8% of GP practices was 73.2% in 65 years and over (73.4% in 2012/13),
52.3% in under 65 year olds at risk (51.3% in 2012/13), 39.8% in all pregnant women (40.3% in
2012/13), 42.6% in all 2 year olds and 39.6% in all 3 year olds.
o Provisional data from the final monthly collection of influenza vaccine uptake by frontline healthcare
workers show 54.8% were vaccinated by 31 January 2014 from 99.3% of Trusts, compared to
45.9% in 2012/13.
o WHO has published recommendations for the composition of influenza virus vaccines for use in the
2014/15 northern hemisphere influenza season.
 International situation
o Overall influenza activity in North America continues to decrease.
o Across Europe, influenza activity is declining but influenza is still being detected in the vast majority
of reporting countries.
...
 Number of new admissions and fatal confirmed influenza cases in ICU/HDU (USISS mandatory ICU scheme),
UK (week 15)
- In week 15, 16 new admissions to ICU/HDU with confirmed influenza infection (10 A(H1N1)pdm09, three A(H3N2)
and three A unknown subtype) were reported across the UK (137/156 Trusts in England) through the USISS
mandatory ICU scheme (Figures 10 and 11) compared to 30 in week 14. One new confirmed influenza death was
reported in week 15 2014. A total of 825 admissions (453 A(H1N1)pdm09, 323 A(unknown), 35 A(H3N2) and 14 B)
and 77 confirmed influenza deaths have been reported since week 40 2013.
...
http://www.hpa.org.uk/webc/HPAwebFile/HPAweb_C/1317141109012
 
Re: United Kingdom - 2013-2014 Influenza Surveillance Reports

PHE Weekly National Influenza Report
Summary of UK surveillance of influenza and other seasonal respiratory
illnesses
24 April 2014 ? Week 17 report (up to week 16 data)

Summary

Influenza activity is continuing to decline.
 Overall weekly influenza GP consultation rates across the UK
o In week 16 (ending 20 April 2014), overall weekly influenza GP consultations remained low in
England (0.6 per 100,000), Wales (2.1 per 100,000), Scotland (5.2 per 100,000) and Northern
Ireland (14.8 per 100,000)). Please note week 16 contained a bank holiday which will likely impact
on observed GP consultation rates.
o In week 16, syndromic surveillance indicators for influenza remain low.
o One new acute respiratory outbreak has been reported in the past seven days across the UK in a
hospital (influenza A(H3)).
 Virology
o In week 16 2014, 38 influenza positive detections were recorded through the DataMart scheme
(nine A(H1N1)pdm09, four A(H3), nine A(not subtyped) and three B, a positivity of 4.6% compared
to 6.3% in week 15), with the highest positivity reported in 45-64 year olds (10.2%).
o Two samples were positive for influenza through the English GP sentinel schemes (one
A(H1N1)pdm09 and one A(H3)).
 Disease severity and mortality
o Eight new admissions to ICU/HDU with confirmed influenza (four A(H1N1)pdm09 and four A
unknown subtype) and five confirmed influenza deaths were reported through the USISS
mandatory ICU surveillance scheme across the UK (131 Trusts in England) in week 16. 15 new
hospitalised confirmed influenza cases were reported through the USISS sentinel hospital network
across England (25 Trusts).
o In week 16 2014, no excess all-cause mortality by week of death was seen across the UK through
the EuroMOMO algorithm.
 Vaccination
o In the final monthly collection up to 31 January 2014, provisional cumulative seasonal influenza
vaccine uptake from 99.8% of GP practices was 73.2% in 65 years and over (73.4% in 2012/13),
52.3% in under 65 year olds at risk (51.3% in 2012/13), 39.8% in all pregnant women (40.3% in
2012/13), 42.6% in all 2 year olds and 39.6% in all 3 year olds.
o Provisional data from the final monthly collection of influenza vaccine uptake by frontline healthcare
workers show 54.8% were vaccinated by 31 January 2014 from 99.3% of Trusts, compared to
45.9% in 2012/13.
o WHO has published recommendations for the composition of influenza virus vaccines for use in the
2014/15 northern hemisphere influenza season.
 International situation
o Overall influenza activity in North America continues to decrease ? late circulation of influenza B
continues, although the overall number of influenza detections remains low.
o Across Europe, influenza activity is declining but influenza is still circulating in some reporting
countries.
...
-In week 16, eight new admissions to ICU/HDU with confirmed influenza infection (four A(H1N1)pdm09 and four A
unknown subtype) were reported across the UK (131/156 Trusts in England) through the USISS mandatory ICU
scheme (Figures 10 and 11) compared to 25 in week 15. Five new confirmed influenza deaths were reported in week
16 2014. A total of 842 admissions (462 A(H1N1)pdm09, 329 A(unknown), 37 A(H3N2) and 14 B) and 84 confirmed
influenza deaths have been reported since week 40 2013.
...
http://www.hpa.org.uk/webc/HPAwebFile/HPAweb_C/1317141140526
 
Re: United Kingdom - 2013-2014 Influenza Surveillance Reports

PHE Weekly National Influenza Report
Summary of UK surveillance of influenza and other seasonal respiratory
illnesses
8 May 2014 ? Week 19 report (up to week 18 data)

Summary

In week 18, influenza activity is at low levels.
 Overall weekly influenza GP consultation rates across the UK
o In week 18 (ending 4 May 2014), overall weekly influenza GP consultations remained low in
England (1.5 per 100,000), Wales (1.3 per 100,000), Scotland (2.8 per 100,000) and Northern
Ireland (15.3 per 100,000)).
o In week 18, syndromic surveillance indicators for influenza remained low.
o Two new acute respiratory outbreak have been reported in the past seven days across the UK in
care homes (one influenza A(H3) and one not tested).
 Virology
o In week 18 2014, 37 influenza positive detections were recorded through the DataMart scheme (10
A(H1N1)pdm09, six A(H3), 10 A(not subtyped) and 11 B, a positivity of 6.2% compared to 3.5% in
week 17), with the highest positivity reported in 45-64 year olds (8.3%).
o No samples were positive for influenza through the English GP sentinel schemes.
 Disease severity and mortality
o Seven new admissions to ICU/HDU with confirmed influenza (five A(H1N1)pdm09 and two
A(H3N2)) and no confirmed influenza deaths were reported through the USISS mandatory ICU
surveillance scheme across the UK (121 Trusts in England) in week 18.
o 11 new hospitalised confirmed influenza cases were reported through the USISS sentinel hospital
network across England (23 Trusts).
o In week 16 2014, no excess all-cause mortality by week of death was seen across the UK through
the EuroMOMO algorithm.
 Vaccination
o In the final monthly collection up to 31 January 2014, provisional cumulative seasonal influenza
vaccine uptake from 99.8% of GP practices was 73.2% in 65 years and over (73.4% in 2012/13),
52.3% in under 65 year olds at risk (51.3% in 2012/13), 39.8% in all pregnant women (40.3% in
2012/13), 42.6% in all 2 year olds and 39.6% in all 3 year olds.
o Provisional data from the final monthly collection of influenza vaccine uptake by frontline healthcare
workers show 54.8% were vaccinated by 31 January 2014 from 99.3% of Trusts, compared to
45.9% in 2012/13.
o WHO has published recommendations for the composition of influenza virus vaccines for use in the
2014/15 northern hemisphere influenza season.
 International situation
o Overall influenza activity in North America continues to decrease.
o Across Europe, overall influenza activity is declining in reporting countries.
...
Number of new admissions and fatal confirmed influenza cases in ICU/HDU (USISS mandatory ICU scheme),
UK (week 18)
- In week 18, seven new admissions to ICU/HDU with confirmed influenza infection (five A(H1N1)pdm09 and two
A(H3N2)) were reported across the UK (121/156 Trusts in England) through the USISS mandatory ICU scheme
(Figures 10 and 11) compared to 17 in week 17. No new confirmed influenza deaths were reported in week 18 2014.
A total of 878 admissions (488 A(H1N1)pdm09, 336 A(unknown), 40 A(H3N2) and 14 B) and 93 confirmed influenza
deaths have been reported since week 40 2013.
...
http://www.hpa.org.uk/webc/HPAwebFile/HPAweb_C/1317141210827
 
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