Nature: Superinfection is infection of an already infected person by a more virulent strain of the infective agent, such as a virus. It counters the general principle in medicine that infection protects against infection -- that if a person with an infective disease, they is protected from contracting a worse form of that disease.
Incidence: Superinfection has been documented for HIV in humans. It is likely to reduce the effectiveness of an eventual vaccine against AIDS.
Problem Type: E: Emanations of other problems
Date of last update 23.05.2000 – 00:00 CEST