Acute. An illness of long duration is called chronic.
Illnesses requiring short-term medical attention are referred to as "acute." In contrast, chronic illnesses require long-term medical attention.
A Short Duration Call is a call that does not last long.
Depends on the illness.
There are two accepted forms for possessive singular nouns ending in s:Add an apostrophe (') after the existing s at the end of the word: illness'Add an apostrophe s ('s) after the existing s at the end of the word: illness'sExamples:Fortunately, the illness' duration is short.Fortunately, the illness's duration is short.
The duration of Ill wind is 1.53 hours.
The duration of Your Call is 3120.0 seconds.
The duration of His Call is 1.03 hours.
The duration of Short Time is 1.62 hours.
The duration of Cutting It Short is 1.55 hours.
The duration of Short of Love is 1.77 hours.
The duration of A Short Vision is 360.0 seconds.
The duration of The Call of the Savage is 3.85 hours.
The duration of The Shortcut is 1.67 hours.