Opportunistic infections and diseases occur in people whose
immune systems have been weakened. They usually do not
occur in people who have healthy immune systems. When the immune system is
weakened by a disease such as
HIV infection, opportunistic diseases may cause
serious, even life-threatening, illnesses.
Opportunistic infections that are common in people who have
ByHealthwise Staff Primary Medical ReviewerE. Gregory Thompson, MD - Internal Medicine Brian D. O'Brien, MD - Internal Medicine Adam Husney, MD - Family Medicine Specialist Medical ReviewerPeter Shalit, MD, PhD - Internal Medicine