Virus, attenuated

What Kind of Doctor Do I Need? Slideshow

Medical Definition of Virus, attenuated

Virus, attenuated: A virus that has been weakened. A vaccine against a viral disease can be made from an attenuated, less virulent strain of the virus: a virus that is capable of stimulating an immune response and creating immunity but not of causing illness.


Subscribe to MedicineNet's General Health Newsletter

By clicking Submit, I agree to the MedicineNet's Terms & Conditions & Privacy Policy and understand that I may opt out of MedicineNet's subscriptions at any time.

Reviewed on 7/1/2016

Health Solutions From Our Sponsors