noun
seasonal influenza; seasonal flu
Medical term for the common seasonal flu, as opposed to pandemic or avian influenza.
今年の季節性インフルエンザのワクチンは十分に供給されています。
This year's seasonal influenza vaccine is in ample supply.
季節性インフルエンザは毎年冬に流行します。
Seasonal influenza spreads every winter.
Avian influenza, which primarily affects birds but can sometimes infect humans; distinct from the human seasonal flu.
Compound of 季節性 (seasonal) + インフルエンザ (influenza), a straightforward modern medical term.