Abbreviation of 鳥インフルエンザ. Used in news reports and casual contexts to refer to avian influenza outbreaks.
See also: 鳥インフルエンザ
There are concerns about a bird flu outbreak again this year.
The news reported the spread of avian influenza infections.
Abbreviation of 鳥インフルエンザ (tori infuruenza, 'avian influenza'), combining 鳥 (tori, 'bird') with the first part of インフルエンザ (infuruenza, 'influenza').