Infections and the nervous system in the elderly.
D000368:Aged; D001424:Bacterial Infections / Q000175:diagnosis*; D001922:Brain Abscess / Q000175:diagnosis; D006561:Herpes Simplex / Q000175:diagnosis; D006562:Herpes Zoster / Q000175:diagnosis; D006801:Humans; D008581:Meningitis / Q000175:diagnosis; D009181:Mycoses / Q000175:diagnosis; D009422:Nervous System Diseases / Q000175:diagnosis*; D013587:Syphilis / Q000175:diagnosis; D014777:Virus Diseases / Q000175:diagnosis*