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HIV

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HIV & The Immune System The human immunodeficiency virus (HIV) is a pathogen that destroys infection-fighting T-Cells in the body. Acquired Immune Deficiency Syndrome ... – PowerPoint PPT presentation

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Title: HIV


1
HIV The Immune System
  • The human immunodeficiency virus (HIV) is a
    pathogen that destroys infection-fighting
  • T-Cells in the body.
  • Acquired Immune Deficiency Syndrome (AIDS) is a
    condition that results when infection with HIV
    causes a breakdown of the bodys ability to fight
    other infections.

2
HIV The Immune System (cont.)
  • A person is infected with HIV as soon as the
    virus enters the blood. The virus attaches itself
    to helper-T cells, where it then reproduces its
    genetic material. HIV can then take control of
    the cell, produce new viral parts, and infect
    other cells. When the number of helper-T cells is
    lowered, the body has a reduced ability to fight
    pathogens, and infections develop.

3
HIV The Immune System (cont.)
  • A person is said to have AIDS when his or her
    T-Cell count reaches a certain level, when
    opportunistic infections and noncommunicable
    diseases are present, and when other symptoms
    develop. An opportunistic infection is one that
    develops in a person with a weak immune system.
    Opportunistic infections are difficult to treat
    and can cause death in people who have AIDS.

4
How HIV Is Spread
  1. Blood
  2. Vaginal secretions
  3. Semen
  4. Other body fluids that might contain blood (such
    as wound secretions)
  5. Breast milk

5
How HIV Is NOT Spread
  • Hugging
  • Coughing
  • Sharing eating utensils
  • Sharing bathroom facilities
  • Being bitten by an insect
  • Using a telephone or computer
  • Kissing
  • Sneezing
  • Sharing towels or brush/combs
  • Sharing a water fountain
  • Donating blood
  • Swimming in a pool
  • Using sports/gym equipment

6
Testing For HIV Infection
  • Any person who feels that s/he might have been
    exposed to HIV should get tested immediately. Do
    not wait for signs or symptoms. Get to a medical
    professional ASAP!
  • When a person becomes infected with HIV, HIV
    antibodies typically show up within 3 months
    after infection. Almost all people who are
    infected with HIV will show antibodies within 6
    months.

7
Signs Of HIV AIDS Infection
  • The signs of HIV infection might appear right
    away or take 12 or more years to occur. These
    signs usually include tiredness, fever, swollen
    glands, rash, headaches, and flu-like symptoms.
    They come and go, depending on the helper T-Cell
    count. Even during times when there are no
    symptoms, HIV still continues to destroy the
    immune system.

8
Signs Of HIV AIDS Infection (cont.)
  • Thrush is a fungal infection of the mucous
    membranes of the tongue and mouth. White spots
    and ulcers cover the infection. Oral hairy
    leukoplakia is an infection in which white fuzzy
    patches are found on the tongue. Pneumocystis
    carinii pneumonia is a form of pneumonia in AIDS
    patients. Symptoms include dry cough, fever, and
    difficulty breathing.

9
Signs Of HIV AIDS Infection (cont.)
  • Kaposis sarcoma causes purple lesions and tumors
    on the skin and in the linings of the internal
    organs.
  • AIDS Dementia Complex is a loss of brain function
    caused by HIV infection. Symptoms include
    forgetfulness, personality changes, and loss of
    coordination. The disorder worsens.

10
Treatment For HIV AIDS
  • There is no cure for HIV infection or AIDS.
    Treatment focuses on making the immune system
    strong. AZT is a drug that slows the
    multiplication of HIV. DDI is another drug that
    slows the multiplication of HIV. These drugs need
    to be given a soon as possible after a person
    tests HIV-positive. By slowing the multiplication
    of HIV, a person will stay healthier longer.

11
Treatment For HIV AIDS (cont.)
  • Protease inhibitors are antiviral drugs that
    decrease the amount of HIV in the blood and
    increase the helper T-Cell count. Protease
    inhibitors are newer and more effective against
    HIV than some other drugs. Some people who have
    used them have had the amount of HIV in the blood
    drop to a level where it cannot be detected.
    Scientists are still trying to discover where the
    HIV hides during this time.

12
Treatment For HIV AIDS (cont.)
  • There are other ways to help the immune system.
    Some people who are infected with HIV get
    transfusions of healthy white blood cells. Some
    have bone marrow transplants. Just as important
    is good nutrition, reducing stress, and getting
    plenty of quality sleep time.

13
Preventing HIV Infection AIDS
  • Practice abstinence
  • Choose not to use drugs
  • Carefully choose your location for any body
    piercing or tattoos
  • Avoid contact with the blood body fluids,
    mucous membranes, or broken skin of another
    person
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