HIV/AIDS Lecture
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HIV/AIDS Lecture

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A good review of the basics, including history, and stats.

A good review of the basics, including history, and stats.

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HIV/AIDS Lecture HIV/AIDS Lecture Presentation Transcript

  • HIV and AIDS Derrick Willard Providence Day School
  • Objectives
    • Define HIV and AIDS
    • Understand Infection
    • Learn History
    • Learn Statistics
    • Learn Treatments
  • Definitions
    • HIV=Human Immunodeficiency Virus
    • AIDS=Acquired Immune Deficiency Syndrome
  • Other Facts
    • A person can be infected with HIV and not have AIDS
    • 99% of those infected with HIV will eventually develop AIDS
    • HIV does not kill, secondary infections usually kill
    • Most people with HIV do not have AIDS
  • Infection (cellular)
    • HIV invades human T-lymphocyte cells (special white blood cells)
    • These “Helper T-cells” usually bind to infected cells and release enzymes which destroy the cell and viruses inside
    • Lysogenic (latent or dormant) type virus so symptoms of AIDS may not appear for many years
    • Retrovirus
  • Infection (body)
    • Sexual Intercourse (vaginal, anal, or oral)
    • Blood to blood contact (needle sharing or transfusion)
    • Mother to child during/after pregnancy
    • NOT BY SWEAT, TEARS, URINE, OR SALIVA (OR INSECTS)!
  • History
    • Recent genetic research suggests HIV jumped species from chimpanzees to humans around 1926
    • Some researchers say first known case in African man in 1959
    • Gay men in US, Sweden, Africa, and Haiti show signs of AIDS in 1978
    • Death rate explodes in 1980s
  • Statistics (US)- Cumulative Dead
    • 1980: 31dead of AIDS
    • 1981: 422 cases, 159 dead
    • 1982: 1,614 cases, 619 dead
    • 1985: 22,996 cases, 12,592 dead
    • 1990: 198,466 cases, 121,255 dead
    • 1995: 534,806 cases, 332,249 dead
    • 1998: 665,357 cases, 401,028 dead
    • 2006: 531,000 dead
  • US Trends
  •  
  •  
  • Statistics(Global)
    • 1997: Approximate number of HIV positive people is 22 million
    • 1997: Approximate death count due to AIDS is 6.4 million
    • Miller texts states between 1981 and 2006 that 37 million died of AIDS-related diseases?
  • Global Trends Sub-Saharan Africa 1985-2004 *Typical graph for Africa and Asia
  • 2008 Global Figures
  •  
  • Treatments
    • No known vaccine or cure
    • HIV mutates glycoproteins too fast to make an effective vaccine
    • 3 Drug “cocktail” currently in use can lower amount of HIV in blood and prolong life
    • Best strategy is prevention
      • Abstinence
      • Avoid blood to blood contact
      • Safe sex
  • Sources
    • AEGIS (AIDS Education Global Information System). On the web at: www.aegis.com
    • www.unaids.org
    • DiSpezio, Michael. The Science of HIV . National Science Teachers Association. Arlington, VA. 1997.
    • Your textbook!