Respiratory Infections

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Respiratory Infections

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HPS Weekly National Influenza Report - Week ending 21 April 2013 25 Apr 2013

This report provides an update on influenza and other seasonal respiratory pathogen activity for the week ending 21 April 2013. For the remainder of the season we will publish bulletin style weekly updates unless there are significant changes in influenza activity which would require more detailed reporting.

This report contains summary epidemiological information on influenza-like illness (ILI), its severity and impact in the community and secondary care settings, and estimates of vaccine uptake.

The GP consultation rate for influenza-like illness (ILI) has been calculated using the same method as in the season 2011/12. Please refer to the technical document for further information.

Clinical influenza activity increased slightly compared to the previous week but was below the threshold for normal seasonal activity overall. Virological influenza activity decreased as detected through the GP sentinel scheme and remained stable as detected through non-sentinel sources, compared to the previous week. Please note that the data for week 16 is provisional.

One influenza case with severe infection requiring management in an intensive care unit (ICU) was reported to HPS in the last week. Since week 40 2012, a total of 123 influenza infections requiring ICU have been reported to HPS (60 A(H3), 20 A(H1N1)pdm09, 7 A (subtype unknown), 36 B), 35 of who were known to have died.

Levels of non-influenza seasonal respiratory pathogens overall were in line with expected levels, with the exception of the levels of Human Metapneumovirus and parainfluenza infections, which were slightly higher than at the same time last year.

There is continuing evidence of significant community circulation of influenza. A CMO letter recommending that antivirals can be used in primary care where clinically appropriate was issued on the 20 December and can be accessed at: http://www.sehd.scot.nhs.uk/cmo/CMO(2012)10.pdf.

Publisher(s)
  • Health Protection Scotland
Last Updated : 22/08/2016