influenza
influenza — noun
1. a common viral infection that affects the breathing system, causing symptoms suc
a common viral infection that affects the breathing system, causing symptoms such as fever, body aches, sore throat, and tiredness — the more formal word for 'flu'
Nala caught influenza during the winter and stayed home from school for a week.
collocation: caught / contracted + influenza
The doctor warned that influenza can be serious for elderly patients with weak immune systems.
influenza + can be serious for [vulnerable group]
A free vaccine against seasonal influenza is available at local clinics every autumn.
Caio missed two weeks of work after coming down with a severe case of influenza.
Lotte's grandmother received an influenza shot before travelling overseas last November.
- flu
the everyday short form, used in speaking and informal writing
用法筆記
More formal than 'flu'. In everyday speech and informal writing, 'flu' is the usual word. 'Influenza' is used in medical contexts, official health announcements, and academic or formal writing.