Human immunodeficiency virus (HIV) is the retro-virus responsible for the clinical spectrum of the acquired immunodeficiency syndrome (AIDS). Once infected by the virus, an individual is said to be HIV-positive. HIV then attacks and progressively destroys key elements of the immune ...

  • Loading...
locked icon

Sign in to access this content

Get a 30 day FREE TRIAL

  • Watch videos from a variety of sources bringing classroom topics to life
  • Read modern, diverse business cases
  • Explore hundreds of books and reference titles