human immunodeficiency virus infectious disease acquired immunodeficiency syndrome true true EFO:0000765 acquired immune deficiency syndrome NCI2004_11_17:C2851 UMLS_CUI:C0001175 SNOMEDCT_US_2018_03_01:62479008 NCI:C2851 disease_ontology AIDS https://www.epilepsy.com/learn/professionals/co-existing-disorders/infectious-states-seizures/viral-infections/human https://www.ncbi.nlm.nih.gov/pubmed/10474720 ICD10CM:B20 MESH:D000163 acquired Immune deficiency DOID:635 A Human immunodeficiency virus infectious disease that results_in reduction in the numbers of CD4-bearing helper T cells below 200 per ��L of blood or 14% of all lymphocytes thereby rendering the subject highly vulnerable to life-threatening infections and cancers, has_material_basis_in Human immunodeficiency virus 1 or has_material_basis_in Human immunodeficiency virus 2, which are transmitted_by sexual contact, transmitted_by transfer of blood, semen, vaginal fluid, pre-ejaculate, or breast milk, transmitted_by congenital method, and transmitted_by contaminated needles. Opportunistic infections are common in people with AIDS.