If you are experiencing a medical emergency please dial 911 immediately
A secondary infection is a bacterial or viral illness that develops following a first illness. The second infection may develop because a person's immune system is stressed or weakened.
The secondary infection may prolong the first infection or make it more severe.
Last Revised: January 10, 2012
Author: Healthwise Staff
Medical Review: William H. Blahd, Jr., MD, FACEP - Emergency Medicine & David Messenger, MD
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