Giuseppe
Emeritus
Source: European Centre for Disease Prevention and Control (ECDC), full PDF document: http://www.ecdc.europa.eu/en/public...UR_Weekly_Influenza_Surveillance_Overview.pdf
UK (HPA Influenza, http://www.hpa.org.uk/infections/topics_az/influenza/seasonal/default.htm and DH (England), http://winterwatch.dh.gov.uk/ ):
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UK (HPA Influenza, http://www.hpa.org.uk/infections/topics_az/influenza/seasonal/default.htm and DH (England), http://winterwatch.dh.gov.uk/ ):
- In week 6/2011, the number of patients in England with confirmed or suspected influenza in critical care beds have declined from a peak of nearly 800 three weeks ago (equivalent to 1.4 per 100 000 population) to around 100 cases on 10 February 2010.
- About 70% of these cases are in the age group 16 to 64 years.
- Up to 9 February 2011, 439 deaths have been reported in influenza cases from across the UK.
- Ninety-three per cent of the cases with additional information were associated with A(H1N1)2009, 1% with untyped influenza A and 6% with influenza B infection.
- Reported deaths associated with influenza have been mainly among younger adults and children.
- Amongst cases with information on age, 3% were less than 5 years old; 4% between 5 and 14 years; 72% from 15 to 64 years and 21% were 65 years or older.
- Of those with available information, 71% were in one of the clinical risk groups for whom vaccination is recommended, which includes pregnant women.
- Important reported clinical risk factors were underlying respiratory disease including asthma (27% of those in the clinical risk groups) and immunosuppression (23%).
- Of cases with information on immunisation history, 72% had not received the 2010 trivalent vaccine and 95% had not received the monovalent pandemic vaccine last season.
- All-cause all-age deaths (due to multiple causes not just influenza) declined again in week 4 and is now below the upper statistical limit of expected levels for this time of year.
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