Weekly influenza surveillance overview, weeks 21-35, 2014

For weeks 21-35/2014:

• Low intensity was reported by all countries submitting reports (15 to 19 depending on the week). Local or sporadic activity was reported by eight countries.
• Of 330 sentinel specimens tested across 14 countries, 10 were positive for influenza virus. Eight were influenza A viruses and two were type B.
• Nine hospitalised, laboratory-confirmed influenza cases were reported by two countries; six of these cases were admitted to intensive care units.

Overall, influenza activity and circulation of influenza viruses in reporting countries was low.