Absolute Contraindication

Acanthosis Nigricans

Acquired Immunity

Acquired Immunodeficiency Syndrome (AIDS)

Acquired Resistance

Active Immunity

Acute HIV Infection

Acute Infection and Early Diseases Research Program (AIEDRP)

Acute Inflammatory Demyelinating Polyneuropathy

Acute Retroviral Syndrome

Adenopathy

Adenovirus

Adherence

Adjuvant

Adverse Drug Reaction (ADR)

Adverse Event (AE)

Agammaglobulinemia

Agency for Healthcare Research and Quality (AHRQ)

Agranulocytopenia

AIDS Case Definition

AIDS Clinical Trials Group (ACTG)

AIDS Dementia Complex (ADC)

AIDS Drug Assistance Programs (ADAPs)

AIDS Education and Training Centers (AETCs)

AIDS Encephalopathy

AIDS Service Organization (ASO)

AIDS-Defining Condition

AIDSinfo

AIDS-Related Cancer

Alanine Aminotransferase (ALT)