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HIV/AIDS Lecture


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

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HIV/AIDS Lecture

  1. 1. HIV and AIDS Derrick Willard Providence Day School
  2. 2. Objectives <ul><li>Define HIV and AIDS </li></ul><ul><li>Understand Infection </li></ul><ul><li>Learn History </li></ul><ul><li>Learn Statistics </li></ul><ul><li>Learn Treatments </li></ul>
  3. 3. Definitions <ul><li>HIV=Human Immunodeficiency Virus </li></ul><ul><li>AIDS=Acquired Immune Deficiency Syndrome </li></ul>
  4. 4. Other Facts <ul><li>A person can be infected with HIV and not have AIDS </li></ul><ul><li>99% of those infected with HIV will eventually develop AIDS </li></ul><ul><li>HIV does not kill, secondary infections usually kill </li></ul><ul><li>Most people with HIV do not have AIDS </li></ul>
  5. 5. Infection (cellular) <ul><li>HIV invades human T-lymphocyte cells (special white blood cells) </li></ul><ul><li>These “Helper T-cells” usually bind to infected cells and release enzymes which destroy the cell and viruses inside </li></ul><ul><li>Lysogenic (latent or dormant) type virus so symptoms of AIDS may not appear for many years </li></ul><ul><li>Retrovirus </li></ul>
  6. 6. Infection (body) <ul><li>Sexual Intercourse (vaginal, anal, or oral) </li></ul><ul><li>Blood to blood contact (needle sharing or transfusion) </li></ul><ul><li>Mother to child during/after pregnancy </li></ul><ul><li>NOT BY SWEAT, TEARS, URINE, OR SALIVA (OR INSECTS)! </li></ul>
  7. 7. History <ul><li>Recent genetic research suggests HIV jumped species from chimpanzees to humans around 1926 </li></ul><ul><li>Some researchers say first known case in African man in 1959 </li></ul><ul><li>Gay men in US, Sweden, Africa, and Haiti show signs of AIDS in 1978 </li></ul><ul><li>Death rate explodes in 1980s </li></ul>
  8. 8. Statistics (US)- Cumulative Dead <ul><li>1980: 31dead of AIDS </li></ul><ul><li>1981: 422 cases, 159 dead </li></ul><ul><li>1982: 1,614 cases, 619 dead </li></ul><ul><li>1985: 22,996 cases, 12,592 dead </li></ul><ul><li>1990: 198,466 cases, 121,255 dead </li></ul><ul><li>1995: 534,806 cases, 332,249 dead </li></ul><ul><li>1998: 665,357 cases, 401,028 dead </li></ul><ul><li>2006: 531,000 dead </li></ul>
  9. 9. US Trends
  10. 12. Statistics(Global) <ul><li>1997: Approximate number of HIV positive people is 22 million </li></ul><ul><li>1997: Approximate death count due to AIDS is 6.4 million </li></ul><ul><li>Miller texts states between 1981 and 2006 that 37 million died of AIDS-related diseases? </li></ul>
  11. 13. Global Trends Sub-Saharan Africa 1985-2004 *Typical graph for Africa and Asia
  12. 14. 2008 Global Figures
  13. 16. Treatments <ul><li>No known vaccine or cure </li></ul><ul><li>HIV mutates glycoproteins too fast to make an effective vaccine </li></ul><ul><li>3 Drug “cocktail” currently in use can lower amount of HIV in blood and prolong life </li></ul><ul><li>Best strategy is prevention </li></ul><ul><ul><li>Abstinence </li></ul></ul><ul><ul><li>Avoid blood to blood contact </li></ul></ul><ul><ul><li>Safe sex </li></ul></ul>
  14. 17. Sources <ul><li>AEGIS (AIDS Education Global Information System). On the web at: </li></ul><ul><li> </li></ul><ul><li>DiSpezio, Michael. The Science of HIV . National Science Teachers Association. Arlington, VA. 1997. </li></ul><ul><li>Your textbook! </li></ul>