A member asked:

Is it a virus itself or your body's immune response to the virus that harms u and makes u sick?

A doctor has provided 1 answer
Dr. John Chiu answered

Both: For example, the flu virus can trigger asthma and the other "cold' symptoms. The fever and body aches are likely the result of the body fighting off the virus by producing interferons.

Answered 12/4/2013

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