Depends: Febrile illness simply means illness with fever. Most simple viral illnesses last 3-5 days but cancer can also cause fever and if undiagnosed can last till you die. Stills disease can last for weeks if untreated.
Answered 7/14/2020
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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