| ~ opportunistic i. — 1. Any infection
that results from a defective immune
system that cannot defend against
pathogens normally found in the en-
vironment. Common types include
bacterial (Pseudomonas aeruginosa),
fungal (Candida albicans), protozoan
(Pneumocystis carinii), and viral (cy-
tomegalovirus). Opportunistic infec-
tions are seen in patients with impaired
defenses against disease, such as those
with cystic fibrosis, poorly controlled
diabetes mellitus, acquired or con-
genital immune deficiencies, or organ
transplants. 2. An infection that results
when resident flora proliferate and in-
fect a body site in which they are nor-
mally present or at some other location
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