|
|
Home > Rapid surveillance of influenza in Wales using Audit+
Rapid surveillance of influenza in Wales using Audit+ | Summary of current influenza activity | Trend | Last updated | | Influenza activity at baseline level | Stable | 09/02/10 | | | NPHS CDSC would ask General Practitioners not to change their coding practices due to swine influenza but to continue using the existing Read codes as they have done for previous influenza seasons. We would ask that practitioners use the diagnostic Read code H27z rather than the 16L code when diagnosing influenza like symptoms. | Notes on interpretation: - Rates are calculated daily using data from all practices in Wales participating in the Welsh Assembly Government Data Quality Service Scheme (comprising the practice module Audit+, and the central analysis tool, Audit Web)
- Rolling weekly influenza consultation rates are expressed as: number of consultations per 100,000 practice population per week.
- The rolling weekly rate is based on consultations recorded using Read codes (see box 1 for list of Read codes used).
- Rates are calculated as rolling weekly rates based on the seven day period leading up to and including submission date .
- Only practices reporting to Audit+ on the end date will be included in the rate for the preceeding week.
- At present, thresholds have not been established for influenza consultation rates using Audit+. Preliminary analysis indicates that reporting levels are generally higher in Audit+ than in the GP Surveillance of Infection in Wales scheme (see Figure 3 for historic influenza trends recorded in the GP Surveillance of Infections in Wales scheme).
| | Box 1: Read codes extracted through Audit+ | H27.. | Influenza | | H270. | Influenza with pneumonia | | H2700 | Influenza with bronchopneumonia | | H2701 | Influenza with pneumonia, influenza virus identified | | H270z | Influenza with pneumonia NOS | | H271. | Influenza with other respiratory manifestation | | H2710 | Influenza with laryngitis | | H2711 | Influenza with pharyngitis | | H271z | Influenza with respiratory manifestations NOS | | H27y.. | Influenza with other manifestations | | H27y0 | Influenza with encephalopathy | | H27y1 | Influenza with gastrointestinal tract involvement | | H27yz | Influenza with other manifestations NOS | | H27z. | Influenza NOS | | Due to technical problems we are unable to provide daily influenza activity reports at the moment and would like to apologise for any inconvenience this may cause. FIGURE 1: Rolling weekly influenza consultation rate in Wales (per 100,000 practice population per week) from 1 May 2009  Source: Influenza consultation data extracted through Audit+ using the following Read Codes: 'H27.', 'H270.', 'H2700', 'H2701', 'H270z', 'H271.', 'H2710', 'H2711', 'H271z', 'H27y..', 'H27y0', 'H27y1', 'H27yz' and 'H27z.' | TABLE 1: Rolling weekly influenza consultation rate in Wales for the preceeding month | Submission date | Reporting statistics (percentages expressed as % of total for Wales) | Age specific consultation rates per 100,000 population (age in years) | Influenza consultation rate (per 100,000 population) | | No. practices reporting | % practices reporting | % population covered | <01 | 01-04 | 05-14 | 15-44 | 45-64 | 65-74 | 75+ | | 08/01/2010 | 410 | 84 | 90 | 7.5 | 11.8 | 6.5 | 20.1 | 20.3 | 8.7 | 9.8 | 16.2 | | 09/01/2010 | 380 | 78 | 83 | 16.2 | 12.9 | 7.8 | 23.0 | 23.6 | 10.3 | 9.8 | 18.7 | | 10/01/2010 | 381 | 78 | 83 | 16.4 | 12.9 | 7.0 | 23.1 | 22.2 | 10.3 | 10.2 | 18.3 | | 11/01/2010 | 350 | 72 | 77 | 13.1 | 10.9 | 6.0 | 21.7 | 21.2 | 10.7 | 8.9 | 17.2 | | 12/01/2010 | 371 | 76 | 82 | 8.2 | 11.1 | 4.9 | 19.2 | 22.1 | 7.8 | 6.4 | 15.8 | | 13/01/2010 | 371 | 76 | 81 | 8.4 | 11.3 | 4.2 | 16.4 | 19.8 | 4.8 | 5.5 | 13.6 | | 14/01/2010 | 374 | 76 | 78 | 8.6 | 8.8 | 3.9 | 15.1 | 18.5 | 5.9 | 2.5 | 12.5 | | 15/01/2010 | 164 | 34 | 33 | 9.6 | 2.2 | 6.4 | 14.6 | 18.2 | 6.9 | 2.6 | 12.4 | | 16/01/2010 | 416 | 85 | 89 | 7.6 | 6.9 | 3.1 | 12.7 | 17.3 | 6.4 | 3.6 | 11.2 | | 17/01/2010 | 382 | 78 | 82 | 4.2 | 8.4 | 3.4 | 13.5 | 18.4 | 6.1 | 3.9 | 11.9 | | 18/01/2010 | 375 | 77 | 80 | 4.3 | 6.7 | 3.1 | 12.8 | 16.8 | 6.7 | 3.5 | 11.1 | | 19/01/2010 | 347 | 71 | 77 | 4.4 | 7.0 | 2.4 | 11.5 | 13.5 | 7.4 | 4.7 | 9.8 | | 20/01/2010 | 426 | 87 | 89 | 11.3 | 9.4 | 3.1 | 11.2 | 12.6 | 7.6 | 3.6 | 9.6 | | 21/01/2010 | 407 | 83 | 86 | 11.8 | 10.7 | 2.9 | 11.6 | 13.6 | 5.8 | 3.8 | 9.9 | | 22/01/2010 | 401 | 82 | 85 | 11.9 | 10.8 | 2.5 | 12.4 | 14.5 | 7.1 | 4.7 | 10.1 | | 23/01/2010 | 398 | 81 | 78 | 8.6 | 9.7 | 3.9 | 12.1 | 11.5 | 6.0 | 4.7 | 9.7 | | 24/01/2010 | 359 | 73 | 75 | 9.0 | 8.2 | 3.7 | 11.8 | 11.0 | 5.8 | 5.5 | 9.4 | | 25/01/2010 | 358 | 73 | 77 | 8.8 | 8.0 | 3.6 | 11.2 | 11.6 | 5.7 | 5.3 | 9.3 | | 26/01/2010 | 404 | 83 | 87 | 0.0 | 9.7 | 3.6 | 11.4 | 9.0 | 4.5 | 6.5 | 8.7 | | 27/01/2010 | 416 | 85 | 90 | 0.0 | 7.6 | 3.8 | 11.3 | 8.4 | 5.2 | 8.1 | 8.6 | | 28/01/2010 | 408 | 84 | 87 | 0.0 | 8.8 | 3.9 | 10.5 | 8.7 | 5.4 | 8.4 | 8.5 | | 29/01/2010 | 407 | 83 | 86 | 0.0 | 8.8 | 4.6 | 10.1 | 8.9 | 6.2 | 8.0 | 8.5 | | 30/01/2010 | 405 | 83 | 80 | 8.4 | 8.6 | 4.6 | 10.6 | 8.9 | 5.8 | 7.1 | 8.7 | | 31/01/2010 | 376 | 77 | 77 | 8.8 | 8.9 | 5.2 | 10.6 | 8.5 | 5.6 | 7.4 | 8.6 | | 01/02/2010 | 371 | 76 | 78 | 8.6 | 8.8 | 4.7 | 10.7 | 9.0 | 7.3 | 7.3 | 8.9 | | 02/02/2010 | 413 | 84 | 88 | 7.6 | 9.5 | 4.2 | 10.0 | 8.7 | 7.0 | 4.2 | 8.2 | | 03/02/2010 | 415 | 85 | 90 | 7.4 | 6.8 | 5.5 | 10.0 | 9.4 | 6.4 | 2.7 | 8.3 | | 04/02/2010 | 412 | 84 | 88 | 15.1 | 5.2 | 6.3 | 11.1 | 10.2 | 5.4 | 3.3 | 8.9 | | 05/02/2010 | 401 | 82 | 83 | 15.4 | 6.4 | 6.0 | 11.1 | 10.3 | 4.4 | 3.5 | 8.9 | | 06/02/2010 | 402 | 82 | 83 | 8.1 | 8.3 | 6.3 | 11.1 | 10.9 | 5.7 | 7.4 | 9.6 | | 07/02/2010 | 381 | 78 | 81 | 8.3 | 10.4 | 6.1 | 10.8 | 10.9 | 4.9 | 7.1 | 9.4 | | 08/02/2010 | 389 | 80 | 84 | 8.0 | 9.1 | 7.0 | 10.3 | 11.1 | 5.6 | 6.8 | 9.3 | TABLE 2: Weekly rolling influenza consultation rate (number of consultations per 100,000 practice population) by local authority of practice location and Resilience Forum area (dates are for the week ending) | | 07/01/2010 | 08/01/2010 | 09/01/2010 | 10/01/2010 | 11/01/2010 | 12/01/2010 | 13/01/2010 | | Carmarthenshire | 15.0 | 13.8 | 13.8 | 13.8 | 14.1 | 17.0 | 14.0 | | Ceredigion | 9.6 | 9.6 | 9.8 | 9.8 | 9.2 | 9.8 | 20.1 | | Pembrokeshire | 23.1 | 21.0 | 26.5 | 24.6 | 24.0 | 15.2 | 21.9 | | Powys | 13.1 | 9.6 | 10.9 | 10.9 | 11.7 | 14.9 | 10.0 | | Dyfed Powys | 14.7 | 13.0 | 14.0 | 14.0 | 14.2 | 14.6 | 15.1 | | Blaenau Gwent | 8.9 | 13.8 | 17.5 | 16.6 | 16.6 | 17.0 | 10.3 | | Caerphilly | 22.6 | 22.0 | 21.1 | 19.9 | 18.7 | 12.8 | 12.1 | | Monmouthshire | 6.1 | 9.4 | 11.5 | 11.8 | 10.9 | 7.6 | 7.6 | | Newport | 15.7 | 18.3 | 25.9 | 21.4 | 21.8 | 15.2 | 16.1 | | Torfaen | 10.0 | 4.3 | 4.3 | 4.3 | 4.3 | 10.0 | 5.3 | | | 14.4 | 14.7 | 18.1 | 16.1 | 15.5 | 12.7 | 11.0 | | | 9.6 | 10.6 | 17.2 | 17.2 | 17.2 | 13.5 | 10.6 | | Conwy | 11.7 | 12.6 | 6.4 | 9.7 | 5.9 | 11.3 | 10.7 | | Denbighshire | 8.4 | 10.5 | 10.5 | 8.8 | 8.0 | 8.0 | 5.7 | | Flintshire | 24.0 | 22.3 | 26.0 | 24.8 | 24.8 | 16.7 | 12.0 | | Gwynedd | 13.8 | 15.0 | 21.4 | 25.1 | 21.6 | 17.8 | 14.6 | | Wrexham | 20.1 | 19.2 | 25.6 | 21.2 | 23.5 | 17.3 | 18.2 | | North Wales | 15.0 | 15.5 | 18.2 | 17.9 | 17.4 | 14.3 | 12.1 | | Bridgend | 23.5 | 22.0 | 26.4 | 19.5 | 19.4 | 27.8 | 21.3 | | | 23.7 | 24.7 | 28.9 | 31.1 | 27.1 | 20.9 | 20.9 | | Merthyr Tydfil | 18.2 | 23.1 | 22.2 | 21.4 | 24.6 | 10.7 | 2.0 | | | 18.0 | 16.4 | 19.7 | 19.6 | 19.9 | 17.2 | 15.2 | | Rhondda Cynon Taf | 17.6 | 15.2 | 16.1 | 15.4 | 9.3 | 12.4 | 10.2 | | Swansea | 5.8 | 5.6 | 6.4 | 7.4 | 6.9 | 8.3 | 7.4 | | Vale of Glamorgan | 21.0 | 24.2 | 29.9 | 29.9 | 29.9 | 28.1 | 16.7 | | South Wales | 18.3 | 18.3 | 20.9 | 20.9 | 18.8 | 18.1 | 14.8 | | | | | | | | | | | Wales | 16.3 | 16.2 | 18.7 | 18.3 | 17.2 | 15.8 | 13.6 | FIGURE 2: Rapid surveillance of influenza in Wales LHB influenza consultation rates map (per 100,000 practice population), using Audit+ as at 14/01/2010 
FIGURE 3: Proportion of practices submitting daily data through Audit+ FIGURE 4: Weekly influenza consultation rate in Wales (per 100,000 practice population per week), week 1 1987 to week 1 2010 GP Sentinel Surveillance of Infections in Wales scheme (not Audit+ surveillance scheme) .gif)
The NPHS produce a weekly influenza surveillance report for Wales which contains data from both the GP sentinel surveillance scheme and the Audit+ rapid surveillance scheme. A new report is published every Wednesday afternoon. These reports are available from: http://www.wales.nhs.uk/sites3/page.cfm?orgid=457&pid=34338
Last updated:
09/02/2010
|
