Influenza.
Influenza A(H3N2) viruses are predominating and causing most outbreaks in North America (Canada and United States) and in some European countries (Finland, Norway, Portugal, Spain and the United Kingdom). A rising trend in influenza A(H3N2) activity has been observed. The only outbreak due to influenza A(H1) virus was reported in Iceland but has declined since week 45.
D004196:Disease Outbreaks; D014943:Global Health; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology* / Q000821:virology; D029521:Alphainfluenzavirus / Q000302:isolation & purification / Q000472:pathogenicity