1 / 54

HSS4331 – International Health Theory

HSS4331 – International Health Theory. HIV/AIDS. Nov 3, 2008. SUNSIH Conference. Who went?. Some More Seminar Opportunities …. Tuesday Nov 4 th , 4pm-5pm RGN Amphitheatre B (2215) Cocktail party in the Atrium afterward

akiko
Télécharger la présentation

HSS4331 – International Health Theory

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. HSS4331 – International Health Theory HIV/AIDS Nov 3, 2008

  2. SUNSIH Conference Who went?

  3. Some More Seminar Opportunities… • Tuesday Nov 4th, 4pm-5pm • RGN Amphitheatre B (2215) • Cocktail party in the Atrium afterward • “Can Anti-Retroviral Therapy Be Used as a Chemical Condom?” by Dr. Paul MacPherson and Dr. Bill Cameron • Yes, you may write a 1-page summary on this seminar

  4. And another… • Wednesday Nov 5th at 4:30pm • Fauteux Hall, Gowlings Moot Court, FTX 147 • “Renewing the Rules of the Game: Creating Collective Power Through the Law” by Dr. Ashraf Ghani • Yes, you may write a 1-page summary on this seminar

  5. Streaming Web-based Seminar • “Closing the Gap in a Generation: Health Equity through Action on the Social Determinants of Health” – a 2day free symposium in London, UK, hosted by the Secretary for State of England • Nov 6 9:AM Greenwich (4:AM Ottawa) to Nov 7 5:pm Greenwich (noon Ottawa) • Register to watch online here: • http://www.csdhconference.org/countdown/ Any two hours of this 2 day event are eligible for your 1-page seminars

  6. Global Health research opportunity Are you interested in Global Health? Dr Anne McCarthy of the Division ofInfectious Disease at the Ottawa Hospital is looking for students to assistin Global Health research. There are three projects for which assistance isneeded.•ACTION Global Health Network - website development: Ongoingdevelopments: new user interface, educational tools, blogging, etc•Global Health needs assessment: Research paper on ethics in traineeglobal health projects. Results to be used to inform global healthcurriculum•Global Health Elective curriculum development: With a global healthneeds assessment completed last year, the global health curriculum team islooking to develop learning modules to be published online and to be usedas content for a global health project manual.If you are interested, please contact Andrew Petrosoniak(apetr069@uottawa.ca) by Monday, November 3rd (TODAY) in order to organize ameeting to discuss the projects further.

  7. Bursary Opportunity • Association of professors of the University of Ottawa (APUO) is offering 50-60 awards of $750 each to students • Application forms are available on line: www.apuo.ca/Info/studentaward/bourses.htm • Deadline is Nov 14, 2008

  8. Today…. • HIV/AIDS • Africa

  9. HIV/AIDS • The basics • “Acquired Immune Deficiency Syndrome” • Caused by “Human Immunodeficiency Virus” • Evidence of infection before 1970 • Current pandemic started in late 1970s, early 1980 • AIDS defined in 1982 • First identified in gay community in USA • Originally called “GRID” – gay-related immune deficiency

  10. Transmitted via… • Sex • Needle sharing • Blood transfusions • Mother-to-infant • Any other activity that allows meaningful contact of body fluids

  11. Timeline… • 1983: Pasteur Institute in France discovers HIV – “Human Immunodeficiency Virus” • If not treated, those with HIV will develop AIDS in 8-10 years • 1995: protease inhibitors dramatically increase survival of HIV patients with access

  12. Alternative Theory • A minority of scientists question the link between HIV and AIDS • http://www.orgonelab.org/hiv_aids.htm

  13. Treatment • “Cocktail” • “highly active anti-retroviral therapy” – HAART • ARV = anti retroviral therapy • Serious side effects • Regimens can be complicated • Can be very expensive

  14. Affordability of ARV drugs -gone down from $10,000/year to $200/year Last year, the European Commission ruled that EU countries are free to make available generic versions of patented drugs for export to poor countries which lack their own manufacturing facilities. Trade Related Intellectual Property Rights (TRIPS)

  15. Death • People don’t “die from AIDS” • AIDS allows “opportunistic infections” • Leading cause of death of AIDS patients is bacterial infection • Tuberculosis • Fungal infections • Pneumonia

  16. Co-infection with TB • 1/3 of the world is currently infected with TB, though most are not “active” cases • 5-10% will develop active TB disease • Only 25% have access to treatment • TB accounts for 13% of all AIDS deaths • HIV is the strongest known risk factor for a TB carrier to progress to full TB disease

  17. Co-infection with STDs • In the presence of an STD, chance of acquiring HIV increases 5X • Puts sex workers at even greater risk

  18. Diagnosis • Bloodtest • Looking for HIV antiobodies • Cheek swab • Not saliva, but “oral mucosal transudate”, a fluid produced by cheek cells • “Visual” • In 1985, WHO developed the “Bangui Definition” for use in countries without antibody testing technology • Sometimes more informal… “Slim disease”

  19. Bangui Definition • Exclusion criteria • Pronounced malnutrition • Cancer • Immunosuppressive treatment • Inclusion criteria with the corresponding score • Weight loss exceeding 10% of body weight 4 • Protracted asthenia 4 • Continuous or repeated attacks of fever for more than a month 3 • Diarrhoea lasting for more than a month 3 • Cough 2 • Pneumopathy 2 • Oropharyngeal candidiasis 4 • Chronic or relapsing cutaneous herpes 4 • Generalized pruritic dermatosis 4 • Herpes zoster (relapsing) 4 • Generalized adenopathy 2 • Neurological signs 2 • Generalized Kaposi's sarcoma 12 • The diagnosis of AIDS is established when the score is 12 or more.

  20. CD4 Count • A proxy measurement of the strength of a patient’s immune system • CD4 count goes down as HIV infection progresses • Used in coordination with… Viral Load Test • The amount of HIV virus in the blood, lymph, spleen, and other body parts • Viral load goes up as HIV infection progresses

  21. HIV/AIDS in the Developed World Case study: USA

  22. HIV/AIDS Around the World To get current data, go to: http://www.unaids.org/en/HIV_data/2006GlobalReport/default.asp

  23. UNAIDS 2008

  24. *detection bias? New AIDS Cases Per Year Per 100,000 Population 35 Caribbean 30 25 20 North America 15 10 Latin America 5 0 2000 90 91 92 93 94 95 96

  25. Estimated number of adult and child deaths due to AIDS globally, 1990–2007 3.0 Millions 2.5 2.0 1.5 1.0 0.5 0 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 Year This bar indicates the range around the estimate 5.3

  26. The red bits are what we call “Sub-Saharan Africa”

  27. Estimated number of people living with HIV and adult HIV prevalence Global HIV epidemic, 1990‒2005* HIV epidemic in sub-Saharan Africa, 1985‒2005* Number of people living with HIV (millions) % HIV prevalence, adult (15‒49) Number of people living with HIV (millions) % HIV prevalence, adult (15‒49) 50 5.0 30 15.0 12.5 25 40 4.0 20 10.0 30 3.0 7.5 15 20 2.0 5.0 10 10 1.0 2.5 5 0 0.0 0 0.0 1990 1995 2000 2005 1985 1990 1995 2000 2005 *Even though the HIV prevalence rates have stabilized in sub-Saharan Africa, the actual number of people infected continues to grow because of population growth. Applying the same prevalence rate to a growing population will result in increasing numbers of people living with HIV. Number of people living with HIV % HIV prevalence, adult (15-49) This bar indicates the range around the estimate 2.2

  28. Regional HIV and AIDS statistics and features, 2006 Adults & children living with HIV Adults & children newly infected with HIV Adult (15‒49) prevalence [%] Adult & child deaths due to AIDS Sub-Saharan Africa 24.7 million [21.8 – 27.7 million] 2.8 million [2.4 – 3.2 million] 5.9% [5.2% – 6.7%] 2.1 million [1.8 – 2.4 million] Middle East & North Africa 460 000 [270 000 – 760 000] 68 000 [41 000 – 220 000] 0.2% [0.1% – 0.3%] 36 000 [20 000 – 60 000] South and South-East Asia 7.8 million [5.2 – 12.0 million] 860 000 [550 000 – 2.3 million] 0.6% [0.4% – 1.0%] 590 000 [390 000 – 850 000] East Asia 750 000 [460 000 – 1.2 million] 100 000 [56 000 – 300 000] 0.1% [<0.2%] 43 000 [26 000 – 64 000] Latin America 1.7 million [1.3 – 2.5 million] 140 000 [100 000 – 410 000] 0.5% [0.4% – 1.2%] 65 000 [51 000 – 84 000] Caribbean 250 000 [190 000 – 320 000] 27 000 [20 000 – 41 000] 1.2% [0.9% – 1.7%] 19 000 [14 000 – 25 000] Eastern Europe & Central Asia 1.7 million [1.2 – 2.6 million] 270 000 [170 000 – 820 000] 0.9% [0.6% – 1.4%] 84 000 [58 000 – 120 000] Western & Central Europe 740 000 [580 000 – 970 000] 22 000 [18 000 – 33 000] 0.3% [0.2% – 0.4%] 12 000 [ <15 000] North America 1.4 million [880 000 – 2.2 million] 43 000 [34 000 – 65 000] 0.8% [0.6% – 1.1%] 18 000 [11 000 – 26 000] Oceania 81 000 [50 000 – 170 000] 7100 [ 3400 – 54 000] 0.4% [0.2% – 0.9%] 4000 [2300 – 6600] TOTAL 39.5 million [34.1 – 47.1 million] 4.3 million[3.6 – 6.6 million] 1.0% [0.9% - 1.2%] 2.9 million [2.5 – 3.5 million] Table 1b

  29. Percentage of the Adult (ages 15-49) population with HIV/AIDS, 2003

  30. 70 Sub-Saharan Africa 60 GLOBAL 50 Percent female (%) Caribbean 40 Asia 30 Latin America 20 Eastern Europe & Central Asia 10 0 1990 ‘91 ‘92 ‘93 ‘94 ‘95 ‘96 ‘97 ‘98 ‘99 2000 ‘01 ‘02 ‘03 ‘04 ‘05 ‘06 2007 Percent of adults (15+) living with HIV who are female 1990–2007 2.4

  31. Haiti – HIV Seroprevalence: gender split

  32. Proportions of HIV infections in different population groups by region, 2005 Eastern Europe and Central Asia Latin America South and South-East Asia* MSM 26% CSW clients 41% CSW 4% MSM 4% CSW 5% CSW clients 13% CSW clients 7% CSW 8% IDU 67% IDU 19% MSM 5% All others 38% All others 17% All others 24% IDU 22% IDU: Injecting Drug Users MSM: Men having sex with men CSW: Commercial Sex Workers * India was omitted from this analysis because the scale of its HIV epidemic (which is largely heterosexual) masks the extent to which other at-risk populations feature in the region’s epidemics. Figure 2

  33. Why “MSM”? • Sexuality is culturally defined • Men having sex with men do not necessarily self-identify as homosexual • Sociologically: • MSM refers to the sexual relationship between two men • Homosexuality refers to broader relationships between men, beyond the sexual

  34. Truck Drivers • Yes, truck drivers • The spread of HIV in Africa is linked to the movement of labour between rural and urban centres • Geographical link between HIV clusters and road networks • Truck drivers have high-risk behaviour of sleeping with prostitutes and a tendency to spread the infection along trade routes

  35. Impact of AIDS on Sub-Saharan Africa • 2/3 of all people with HIV live in this region • 75% of all AIDS deaths occur here • (region comprises only 10% of world population) • Each year, >2 million people died of AIDS in this region • In this region, direct medical treatment related to AIDS (not including ARV) = US$30 per person per year • Overall public health spending is <US$10 per person per year* * UNAIDS 2002 Report on the Global AIDS Epidemic

  36. Impact… • Hospitals • People with HIV occupy half of all hospital beds • Shortage means only people in later stages are admitted, resulting in lessened treatment success • Health Care Workers • Large numbers are HIV or AIDS positive • Dwindling numbers • Providing ARVs requires more training *UNAIDS, 2006 Report on the Global AIDS Epidemic, chapter 4: The impact of AIDS on people and societies

  37. Household Impact • Wage earners killed off -> impoverished families • Young forced into prostitution -> increased disease transmission • AIDS has erased much of the anti-poverty progress made over the past 6 decades • Basic necessities not being provided • There are entire communities with no adults left -> households led by small childen • No transfer of knowledge from adults to children

  38. Food Production • Not enough labour to work fields • In Malawi, Botswana, Zimbabe, agricultural output will drop 14%-20% by 2020 due to AIDS • The use of ARV requires proper nutrition • Vicious cycle: • AIDS -> poor food production -> poor nutrition -> more AIDS

  39. Anti Retrovirals

  40. Number of people receiving antiretroviral drugs in low- and middle-income countries, 2002−2007 3.0 2.8 North Africa and the Middle East Millions 2.6 2.4 2.2 Eastern Europe and Central Asia 2.0 1.8 1.6 East, South and South-East Asia 1.4 1.2 Latin America and the Caribbean 1.0 0.8 0.6 Sub-Saharan Africa 0.4 0.2 0.0 end- 2002 end- 2003 end- 2004 end- 2005 end- 2006 end- 2007 Year Source: Data provided by UNAIDS & WHO, 2008. 5.2

  41. Gender Disparity • The impact of AIDS in Africa is felt disproportionately by women • In many circles, AIDS is no longer a “gay disease”, but a “woman’s disease”, since >50% of all cases are borne by heterosexual women • Women function as family care givers, and are now the sole providers • Leading to neglect in care-giving

  42. AIDS “Virgin Myth” • It is believed that an HIV-infected man will be cured if he has unprotected sex with a virginal female • -> epidemic of child rape • -> emerging epidemic of rape of the disabled • Global movement to re-educate those at risk • South African group “Love Life” • www.lovelife.org.za

  43. Circumcision • Some studies suggest that male circumcision can reduce HIV transmission (via sex) by >50% • Presently, there are vocal advocates to make circumcision mandatory in high risk communities • Global teams offering free, safe circumcisions in Swaziland, Botswana and elsewhere

  44. Nice Summary • Of some of the AIDS impacts is found here: • http://www.avert.org/aidsimpact.htm

  45. Orphans: A Lost Generation • Numbers are large and growing • Social support systems are overwhelmed • Risk of a lost generation: • little or no education • poor socialization • social upheaval • economic underclass

More Related