A member asked:

My 11 month old has been on antibiotic since thursday forupper repository and sinus infection. how long does it take for this to work? its not yet..

A doctor has provided 1 answer

Depends: If the process is bacterialand if the germ is killed by that antibiotic, the fever should respond within 48hrs.Congestion and cough may remain for 2 weeks or more.If the process is viral and or bacterial and unresponsive to the antibiotic, fever may persist and slow or no improvement may be noted.

Answered 8/25/2013

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Thank

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