The period of intensive Influenza surveillance for 2015/16 has ended. This is the second of our monthly bulletin reports over the summer period. It provides an update on influenza and other viral respiratory pathogen activity for the previous four weeks. Over the summer (weeks 21-39) an update report will be published every four weeks unless influenza (or other viral respiratory pathogen) activity increases significantly.
In Scotland, clinical influenza activity is low with virological influenza activity decreasing. Community circulation of influenza has continued beyond the usual seasonal period as evidenced by continued virological influenza detections and reports of laboratory confirmed influenza cases in ICU within the last four weeks.
Three laboratory confirmed influenza cases with severe infection requiring intensive care management (ICU cases) were reported to HPS within the last four weeks (one influenza A(H1N1)pdm09, one influenza A(not subtyped) and one influenza B). Two of these were retrospective reports. No new closed setting outbreaks of acute respiratory infection were reported to HPS within the last four weeks.
The levels of all seasonal respiratory pathogens reported through non-sentinel sources (ECOSS) were increased and above expected seasonal levels in at least one week between weeks 23 and 26 with the exception of human metapneumovirus (hMPV), levels of which were stable and within expected seasonal levels. Respiratory syncytial virus (RSV) levels were above expected seasonal levels in week 25; however, due to the small number of RSV detections in this week and the corresponding week in the previous seasons, the increase should be interpreted with caution.