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Latent - A Hidden or Dormant Infection

By Elizabeth Boskey, Ph.D., About.com

Updated July 30, 2008

About.com Health's Disease and Condition content is reviewed by our Medical Review Board

Definition: A latent infection is an infection that is hidden, inactive, or dormant. As opposed to active infections, where a virus or bacterium is actively replicating and potentially causing symptoms, latent infections are essentially static. While an infection is latent, it may hide from the immune system and/or be difficult to treat with drugs and other therapies.
Also Known As: Dormant/Inactive
Examples:
Herpes infections go through latent periods where individuals don't have any outbreaks.
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