This is the seventh monthly report of the 2013/14 influenza season. This report provides an update on influenza and other seasonal respiratory pathogen activity to the week ending 13 April 2014. For this season, we will provide detailed influenza update reports on a four-weekly basis with bulletin style weekly updates in the weeks in between.
This report contains summary epidemiological information on influenza-like illness (ILI) and acute respiratory illness (ARI) activity, its severity and impact in the community and secondary care settings, and estimation of vaccine uptake.
The GP consultation rate for influenza-like illness (ILI) and the threshold for normal seasonal activity have been calculated using a new method this season which the European Centre for Disease Prevention and Control (ECDC) is recommending should be used across the EU. Please refer to the technical document for further information.
Whilst clinical and virological activity has fallen over the last four weeks, severe cases of influenza continue to be reported suggesting community circulation of influenza is ongoing but at lower levels.
Since week 40 2013, a total of 83 ICU cases have been reported to HPS (77 A(H1N1)pdm09, four A(H3N2) and two A(not subtyped)). The levels of non-influenza seasonal pathogens, reported through the GP sentinel scheme and non-sentinel sources (ECOSS), were low, and fluctuated between the weeks 12 and 15 2014.
A guidance document has been issued by HPS with recommendations for the antiviral treatment and prophylaxis of influenza for the season 2013-14.