Canadian Medical Guide > Diseases > Bacterial Infections and Mycoses > Infection > Opportunistic Infections Terms and Definitions

Opportunistic Infections

Medical Definition:	An infection caused by an organism which becomes pathogenic under certain conditions, e.g., during immunosuppression.
Guide Notes:	"an infect caused by an organism which becomes pathogenic under certain conditions
Previously Indexed:	Acquired Immunodeficiency Syndrome (1983-1986),Bacterial Infections (1972-1986),Infection (1966-1986),specific infection (1966-1986)

Opportunistic Infections Categories.

	AIDS-Related Opportunistic Infections - Opportunistic infections found in patients who test positive for human immunodeficiency virus (HIV). The most common include PNEUMOCYSTIS PNEUMONIA, Kaposi's sarcoma, cryptosporidiosis, herpes simplex, toxoplasmosis, cryptococcosis, and infections with Mycobacterium avium complex, Microsporidium, and Cytomegalovirus.
	Superinfection - A frequent complication of drug therapy for microbial infection. It may result from opportunistic colonization following immunosuppression by the primary pathogen and can be influenced by the time interval between infections, microbial physiology, or host resistance. Experimental challenge and in vitro models are sometimes used in virulence and infectivity studies.

Opportunistic Infections Medical Definitions and Terms

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