This report provides an update on seasonal respiratory pathogen activity for the 2015/16 season up to the week ending 8 May 2016 (week 18). For this season, we will provide detailed influenza update reports on a monthly 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 vaccine uptake estimates.
In Scotland, clinical influenza activity as measured by community presentations is declining. New cases of severe influenza requiring intensive care management are still being reported but are decreasing suggesting the burden on hospital services may be reducing. Continuing community circulation of influenza is evidenced by virology reports of influenza but these have decreased compared to the previous four week period. In those viruses characterised, influenza A (H1N1) pdm2009 is the main virus identified thus far this season. Influenza B detections appear to have peaked in week 13 but still account for the highest number of flu detections in the last four weeks.
Over the past four weeks, the levels of all seasonal non-influenza respiratory pathogens reported through sentinel sources were stable within expected seasonal levels. The levels of Mycoplasma pneumoniae (MPN) and coronavirus reported through non-sentinel sources were high and above seasonal expectations for the last four weeks. The levels of adenovirus exceeded expected seasonal levels in week 15. All other seasonal non-influenza respiratory pathogens reported through non-sentinel sources were stable and within expected seasonal levels for the last four weeks.