aids aids dementia complex aciclovir adult t-cell leukemia american and british english spelling differences amoxicillin ampicillin anorexia antibiotic antibody antigen astrovirus autoimmune disease autoimmune hemolytic anemia avian influenza axillary bornholm disease cervical cancer chickenpox chronic cold agglutinin disease common cold coombs test coronavirus corticosteroid cowpox coxsackie b cytomegalovirus cytomegalovirus retinitis cytopenia dna virus dexamethasone digital object identifier diphtheria diseases database emedicine emil pfeiffer encephalitis encephalitis lethargica epstein-barr virus erythema multiforme exanthem fatigue fetus fever fifth disease foot-and-mouth disease fulminant gastroenteritis genital wart hiv hemiplegia hemolysis hemolytic anemia hepatitis hepatitis a hepatitis c hepatitis d hepatitis e hepatomegaly herpes simplex herpes zoster herpesviridae heterophile human t-lymphotropic virus human papillomavirus human parainfluenza viruses human respiratory syncytial virus icd ii antigen system immunoglobulin g immunoglobulin m incubation period infectious disease influenza jaundice lesion leukemia lymphadenopathy lymphocytic choriomeningitis lymphocytosis malaise measles medical subject headings medical ultrasonography medlineplus meningitis metapneumovirus molluscum contagiosum monkeypox monospot test mucous membrane multiple sclerosis mumps myelitis myocarditis non-steroidal anti-inflammatory drug norovirus northern america nucleus oncovirus opioid pancytopenia penicillin pericarditis pharyngeal pharyngitis pharynx picornavirus plantar wart platelet pneumonitis poliomyelitis post-polio syndrome poxviridae progressive multifocal leukoencephalopathy rna virus rabies respiratory system retrovirus roseola rotavirus rubella saliva severe acute respiratory syndrome sexually transmitted disease smallpox splenomegaly streptococcus subacute sclerosing panencephalitis thrombocytopenia tick-borne meningoencephalitis toxoplasma gondii toxoplasmosis transaminase transverse myelitis tropical spastic paraparesis vaccinia viral hepatitis viral pneumonia viral skin disease wart who named it