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.
It is possible that the main title of the report AIDS (Acquired Immune Deficiency Syndrome) is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.