Weekly influenza surveillance overview, week 15, 2014

​For week 15/2014:
• Low intensity was reported by all reporting countries, while widespread or regional activity was reported by three countries.
• Of the 303 sentinel specimens tested across 15 countries, 13% were positive for influenza virus. The proportion of positive specimens decreased substantially compared to the previous week.
• Four countries reported 40 hospitalised laboratory-confirmed influenza cases, 11 of which were admitted to intensive care units.
Overall, influenza activity continued to decline but influenza viruses still circulated in some reporting countries.