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Brief presentation about AIDS

Brief presentation about AIDS

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AIDS AIDS Presentation Transcript

  •  
  • HIV
    • “ Human Immunodeficiency Syndrome”
    • A specific type of virus (a retrovirus)
    • HIV invades the helper T cells to replicate itself.
    • No Cure
  • AIDS
    • Acquired Immunodeficiency Syndrome
    • HIV is the virus that causes AIDS
    • Disease limits the body’s ability to fight infection
    • A person with AIDS has a very weak immune system
    • No Cure
  • History of AIDS
    • 1959
    • Scientists isolate what is believed to be the earliest known case of AIDS . The discovery suggests that the multitude of global AIDS viruses all shared a common African ancestor within the past 40 to 50 years.
    • 1978
    • Gay men in the US and Sweden -- and heterosexuals in Tanzania and Haiti begin showing signs of what will later be called AIDS.
    • 1972
    • The term AIDS ("acquired immune deficiency syndrome") is used for the first time on July 27th.
    • 1985
    • The FDA (US) approves the first HIV antibody test. Blood products begin to be tested in the US and Japan.
    • The first International Conference on AIDS is held in Atlanta (US).
  •  
  • HIV Virus Structure
  • 3 Dimensional Model of HIV Virus
  • Section Of HIV Virus
  •  
  •  
  • HIV Transmission
    • Common fluids that are a means of transmission:
      • Blood
      • Semen
      • Vaginal Secretions
      • Breast Milk
  • Semen 11,000 Vaginal Fluid 7,000 Blood 18,000 Amniotic Fluid 4,000 Saliva 1 Average number of HIV particles in 1 ml of these body fluids
  • Routes of Transmission of HIV
    • Sexual Contact: Male-to-male
    • Male-to-female or vice versa
    • Female-to-female
    • Blood Exposure: Injecting drug use/needle sharing
    • Occupational exposure
    • Transfusion of blood products
    • Prenatal: Transmission from mom to baby
    • Breastfeeding
  • Through Drug Use
    • Sharing Needles
      • Without sterilization
  • Through Sex
    • Intercourse (penile penetration into the vagina)
    • Oral
    • Anal
    • Digital Sex
  • Mother-to-Baby
    • Before Birth
    • During Birth
    • Postpartum
      • After the birth
  •  
  • Stage 1 - Primary
    • Short, flu-like illness - occurs one to six weeks after infection
    • no symptoms at all
    • Infected person can infect other people
  • Stage 2 - Asymptomatic
    • Lasts for an average of ten years
    • This stage is free from symptoms
    • There may be swollen glands
    • The level of HIV in the blood drops to very low levels
    • HIV antibodies are detectable in the blood
  • Stage 3 - Symptomatic
    • The symptoms are mild
    • The immune system deteriorates
    • emergence of opportunistic infections and cancers
  • Stage 4 - HIV  AIDS
    • The immune system weakens
    • The illnesses become more severe leading to an AIDS diagnosis
  • Symptoms
  • HIV Virus T-Cell HIV Infected T-Cell New HIV Virus
  •  
  • Window Period
    • This is the period of time after becoming infected when an HIV test is negative
    • 90 percent of cases test positive within three months of exposure
    • 10 percent of cases test positive within three to six months of exposure
  • HIV Infection and Antibody Response Infection Occurs AIDS Symptoms ---Initial Stage---- ---------------Intermediate or Latent Stage-------------- ---Illness Stage--- Flu-like Symptoms Or No Symptoms Symptom-free < ---- ----
  • Importance of Early Testing and Diagnosis
    • Allows for early treatment to maintain and stabilize the immune system response
    • Decreases risk of HIV transmission from mother to newborn baby
    • Allows for risk reduction education to reduce or eliminate high-risk behavior
  • Opportunistic Infections associated with AIDS
    • Bacterial
      • Tuberculosis (TB)
      • Strep pneumonia
    • Viral
      • Kaposi Sarcoma
      • Herpes
      • Influenza (flu)
  • Opportunistic Infections associated with AIDS
    • Parasitic
      • Pneumocystis carinii
    • Fungal
      • Candida
      • Cryptococcus
  •  
  • Anonymous Testing
    • No name is used
    • Unique identifying number
    • Results issued only to test recipient
    23659874515 Anonymous
  • Confidential Testing
    • Person’s name is recorded along with HIV results
      • Name and positive results are reported to the State Department and the Centers for Disease Control and Prevention
    • Results issued only to test recipient
  • HIV Testing
    • Requires a blood or oral fluid sample
    • HIV test detects the body’s antibody response to HIV infection
    • The test does NOT detect the HIV virus
  • Blood Detection Tests
    • Enzyme-Linked Immunosorbent Assay/Enzyme Immunoassay (ELISA/EIA)
    • Radio Immunoprecipitation Assay/Indirect Fluorescent Antibody Assay (RIP/IFA)
    • Polymerase Chain Reaction (PCR)
    • Western Blot Confirmatory test
  • HIV Testing
    • Those recently exposed should be retested at least six months after their last exposure
    • Screening test (EIA/ELISA) vs. confirmatory test (IFA)
    • EIA/ELISA (Reactive)
      • Repeat EIA/ELISA (Reactive)
      • IFA (Reactive)
      • Positive for HIV
  • EIA/ELISA Test Positive Negative Run IFA Confirmation Repeat Positive Positive End Testing Repeat ELISA Every 3 months for 1 year Negative Positive Negative Indeterminate Repeat at 2-4 months Repeat at 3 weeks HIV Testing No HIV Exposure Low Risk HIV Exposure High Risk Negative HIV + Repeat every 6 months for continued High risk behavior
  • Urine Testing
    • Urine Western Blot
      • As sensitive as testing blood
      • Safe way to screen for HIV
      • Can cause false positives in certain people at high risk for HIV
  • Oral Testing
    • Orasure
      • The only FDA approved HIV antibody.
      • As accurate as blood testing
      • Draws blood-derived fluids from the gum tissue.
      • NOT A SALIVA TEST!
    • Once a person is infected they are always infected
    • Medications are available to prolong life but they do not cure the disease
    • Those who are infected are capable of infecting others without having symptoms or knowing of the infection
    HIV AIDS
  •  
  • HIV and Sexually Transmitted Diseases
    • STDs increase infectivity of HIV
      • A person co-infected with an STD and HIV may be more likely to transmit HIV due to an increase in HIV viral shedding
      • More white blood cells, some carrying HIV, may be present in the mucosa of the genital area due to a sexually transmitted infection
  • HIV and Sexually Transmitted Diseases
    • STDs increase the susceptibility to HIV
      • Ulcerative and inflammatory STDs compromise the mucosal or cutaneous surfaces of the genital tract that normally act as a barrier against HIV
      • Ulcerative STDs include: syphilis, chancroid, and genital herpes
      • Inflammatory STDs include: chlamydia, gonorrhea, and trichomoniasis
  • HIV and Sexually Transmitted Diseases
    • The effect of HIV infection on the immune system increases the the risk of STDs
      • A suppressed immune response due to HIV can:
        • I ncrease the reactivation of genital ulcers
        • Increase the rate of abnormal cell growth
        • Increase the difficulty in curing reactivated or newly acquired genital ulcers
        • Increase the risk of becoming infected with additional STDs
  •  
  • Pre-test Counseling
    • Transmission
    • Prevention
    • Risk Factors
    • Voluntary & Confidential
    • Reportability of Positive Test Results
  • Post-test Counseling
    • Clarifies test results
    • Need for additional testing
    • Promotion of safe behavior
    • Release of results
  • HIV Risk Reduction
    • Avoid unprotected sexual contact
    • Use barriers such as condoms and dental dams
    • Limit multiple partners by maintaining a long-term relationship with one person
    • Talk to your partner about being tested before you begin a sexual relationship
  • HIV Risk Reduction
    • Avoid drug and alcohol use to maintain good judgment
    • Don’t share needles used by others for:
        • Drugs
      • Tattoos
      • Body piercing
    • Avoid exposure to blood products
  • Abstinence
    • It is the only 100 % effective method of not acquiring HIV/AIDS.
    • Refraining from sexual contact: oral, anal, or vaginal.
    • Refraining from intravenous drug use
  • Monogamous relationship
    • A mutually monogamous (only one sex partner) relationship with a person who is not infected with HIV
    • HIV testing before intercourse is necessary to prove your partner is not infected
  • Condoms
    • Using condoms is not 100 percent effective in preventing transmission of sexually transmitted infections including HIV
    • Condoms = Safer sex
    • Condoms ≠ Safe sex
  • Condom Use
    • Should be used consistently and correctly
    • Should be either latex or polyurethane
    • Should be discussed with your partner before the sexual act begins
    • Should be the responsibility of both partners for the protection of both partners
    • Male and female condoms are available
  • When Using A Condom Remember To:
    • Make sure the package is not expired
    • Make sure to check the package for damages
    • Do not open the package with your teeth for risk of tearing
    • Never use the condom more than once
    • Use water-based rather than oil-based condoms
  • Sterile Needles
    • If a needle/syringe or cooker is shared, it must be disinfected:
      • Fill the syringe with undiluted bleach and wait at least 30 seconds.
      • thoroughly rinse with water
      • Do this between each person’s use
  • People Infected with HIV
    • Can look healthy
    • Can be unaware of their infection
    • Can live long productive lives when their HIV infection is managed
    • Can infect people when they engage in high-risk behavior
  • HIV Exposure and Infection
    • Some people have had multiple exposures without becoming infected
    • Some people have been exposed one time and become infected
  •  
    • “ When you have sex with someone, you are having sex with everyone they have had sex with for the last ten years.”
        • Former Surgeon General
    • C. Everett Koop
  •  
  • HIV Occupational Exposure
    • Review facility policy and report the incident
    • Medical follow-up is necessary to determine the exposure risk and course of treatment
    • Baseline and follow-up HIV testing
    • Four week course of medication initiated one to two hours after exposure
    • Liver function tests to monitor medication tolerance
    • Exposure precautions practiced
  • HIV Non-Occupational Exposure
    • No data exists on the efficacy of antiretroviral medication after non-occupational exposures
    • The health care provider and patient may decide to use antiretroviral therapy after weighing the risks and benefits
    • Antiretrovirals should not be used for those with low-risk transmissions or exposures occurring more than 72 hours after exposure
    PREVENTION --- FIRST
  • HIV Non-Occupational Exposure
    • Provider Considerations:
      • Evaluate HIV status of patient and risk history of source patient
      • Provide necessary medical care and counseling
      • Evaluate risk event and factors for exposure
      • Determine elapsed time from exposure
      • Evaluate potential for continuous HIV exposure
      • Obtain informed consent for testing and treatment
      • Evaluate pregnancy status of females
      • Monitor for drug toxicity and acute infection
  •  
  •  
  • Antiretroviral Drugs
    • Nucleoside Reverse Transcriptase inhibitors
      • AZT (Zidovudine)
    • Non-Nucleoside Transcriptase inhibitors
      • Viramune (Nevirapine)
    • Protease inhibitors
      • Norvir (Ritonavir)
  •  
    • People living with HIV/AIDS ...........46 million
    • New HIV infections in 2003 ............. 5.8 million
    • Deaths due to HIV/AIDS in 2003 ..... 3.5 million
  • Global Estimates For Adults & Children End, 2003
    • Number of people living with HIV/AIDS
    • Total 46 million Adults 43 million
    • Children under 15 years 2.9 million
    • People newly infected with HIV in 2003
    • Total 5.8 million Adults 4.8 million Children under 15 years 810 000
    • AIDS deaths in 2003
    • Total 3.5 million
    • Adults 2.9 million Children under 15 years 580 000
  • Adults and children estimated to be living with HIV/AIDS, End 2003 Total: (34 – 46 million )
    • North America 790 000 – 1.2 million
    • Caribbean 350 000 - 590 000
    • Latin America 1.3 - 1.9 million
    • Western Europe 520000 - 680000
    • Eastern Europe &
    • Central Asia 1.2 million – 1.8 million
    • North Africa &
    • Middle East 470 000 - 730 000
  • Estimated number of adults and children newly infected with HIV during 2003 Total: (4.2 - 5.8 million)
    • North America 36 000 - 54 000
    • Western Europe 30 000 - 40 000
    • Eastern Europe & Central Asia 180 000 - 280 000
    • North Africa & Middle East 43 000 - 67 000
    • East Asia & Pacific 150 000 - 270 000
    • Caribbean 45 000 - 80 000
    • South &South-East Asia 610 000 - 1.1 million
    • Latin America 120 000 - 18 000
    • Sub Saharan Africa 3.0 - 3.4 million
    • Australia &New Zealand 700 - 1 000
  • Yearly Trend of Estimates of HIV Infections in India in Millions
  • 3.97 m. Indians Living with HIV 1998 2002 2003 HIV Prevalence reaches 1% amongst general population in TN, AP & Karnataka Gujarat remained in medium prevalence Gujarat remained in medium prevalence >1% Antenatal women >5 % High risk groups < 5 % High risk groups 1990 1986 1994 2001 2000 First case of HIV detected in Chennai HIV Prevalence reaches over 5% amongst high risk group in Maharahtra & Manipur HIV Prevalence reaches over 1% amongst women in Maharashtra & Manipur EVOLUTION OF HIV EPIDEMIC– INDIA 1986-2003 High level of HIV among ANC clinic attendants in Maharashtra & TN some sites reporting over 5%
  • AGE SEX WISE DISTRIBUTION IN REPORTED AIDS CASES IN GUJARAT 15-49 years of Age Group constitute 88.32 % of total AIDS cases reported in Gujarat.
  • Started on 1st December 1988, World AIDS Day is about raising money, increasing awareness, fighting prejudice and improving education. The World AIDS Day theme for 2009 is ' Universal Access and Human Rights '. World AIDS Day is important in reminding people that HIV has not gone away, and that there are many things still to be done. According to UNAIDS estimates, there are now 33.2 million people living with HIV, including 2.5 million children. During 2007 some 2.5 million people became newly infected with the virus. Around half of all people who become infected with HIV do so before they are 25 and are killed by AIDS before they are 35. Around 95% of people with HIV and AIDS live in developing nations. But HIV today is a threat to men, women and children on all continents around the world. World AIDS Day
  • “ The world we have made as a result of the level of thinking we have done thus far creates problems that we cannot solve at the same level at which we have created them... We shall require a substantially new manner of thinking if humankind is to survive. .” Albert Einstein
  • References
    • http://www.avert.org/world-aids-day.htm
    • http://www.avert.org/aids.htm
    • http://www.who.int/hiv/en/
    • http://www.freedomhivaids.in/
    • http://www.aidsallianceindia.net/
    • http://www.aidsdatahub.org/
    • http://www.undp.org/hiv/
    • www.aids-info.ch
    • www.youtube.com/hivaids
  •  
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