Transcript Ji Won,Aaron,Jun Lee – AIDS presentation

Biology IBS2
Ji Won Lee
Jun Lee
Aaron Savidge
Block F
Oct.2.2009
<http://www.telegraph.co.uk/health/healthnews/6226376/HIV-vaccine-five-damaging-Aids-myths.html>.
AIDS is caused by HIV.
HIV is a virus that gradually attacks immune system cells. As HIV progressively
damages these cells, the body becomes more vulnerable to infections, which it
will have difficulty in fighting off. It is at the point of very advanced HIV
infection that a person is said to have AIDS. It can be years before HIV has
damaged the immune system enough for AIDS to develop.
 HIV causes AIDS by directly
1) inducing the death of CD4+ T cells or
2) interfering with their normal function, and by
3) triggering other events that weaken a person’s immune function.
 Once it enters the body, HIV infects a large number of CD4+ cells
and replicates rapidly. During this acute or primary phase of
infection, the blood contains many viral particles that spread
throughout the body, seeding various organs, particularly the
lymphoid organs.
http://www.aras.ab.ca/transmission-BF.html
 Two to 4 weeks after exposure to the virus, up to 70 percent
of HIV-infected people suffer flu-like symptoms related to
the acute infection.
 Their immune system fights back with killer T cells (CD8+
T cells) and B-cell-produced antibodies , which
dramatically reduce HIV levels. A person’s CD4+ T cell
count may rebound somewhat and even approach its original
level.
 A person may then remain free of HIV-related symptoms for
years despite continuous replication of HIV in the lymphoid
organs that had been seeded during the acute phase of
infection.
Acquired Immunodeficiency Syndrome
Is a collection of symptoms and infections caused by infection with the human
immunodeficiency virus (HIV).
Transmission:
• Blood, semen and even breast milk.
• Carried through:
1)Anal sex,
2)Needle sharing,
3)vaginal sex
4)Even passed on through pregnancy
1. Anal sex:
• Highly risky
• Person who receives the semen is at greater risk
• Person who inserts penis is also at risk
Small lining of the wall
http://www.buyamag.com/graphics/rectum.jpg
2. Needle Sharing:
Sharing needles and or syringes
Now blood donating is screened
Most probable of getting infection as it is directly into the blood stream.
http://s3.images.com/huge.56.280134.JPG
http://iws.punahou.edu/user/JStevens/project/400needles.jpg
3. Vaginal sex:
Male at less risk.
Man can still be infected
Again, the woman will become infected because of semen.
Cuts, braises, scabs on penis can also transmit the disease.
http://www.elements4health.com/images/stories/conditions/HIV-AIDS-map.gif
4. Oral sex:
No one knows how bad the degree of risk is
Less than unprotected anal sex or vaginal sex
Again, person who is giving oral sex, cuts in mouth, sores etc.
http://2.bp.blogspot.com/_5wih30mQwiY/SEFKkQoJU2I/AAAAAAAADGU/KjAUtu6LJkU/s400/sperm%2Bdoll.jpg
People with AIDS will experience the following:
 Trouble getting a job
 Trouble getting health insurance
 Paying expensive treatment
 Trouble with starting a family
 They will become discriminated or experience discrimination
 They will have a stigma
 Children with AIDS will be denied education
 Experience denial
The society will experience the following because of AIDS:
 The need for bigger economic costs
 Increase in orphan numbers
 Loss of labor
 Erosion of morale or weakened confidence in the future
 A higher need for information distribution about AIDS
 Avert. 15 Sept. 2009. Web. 25 Sept. 2009. <http://www.avert.org/aids.htm>.
 HIV vaccine: five damaging Aids myths. 24 Sept. 2009. Web. 29 Sept. 2009.
<http://www.telegraph.co.uk/health/healthnews/6226376/HIV-vaccine-fivedamaging-Aids-myths.html>.
 What is AIDS? 2007. Web. 24 Sept. 2009. <http://www.aids.org/factSheets/101-
What-is-AIDS.html>.
 "Transmission of HIV and AIDS." ARAS Home Page Has Moved. Web. 29 Sept.
2009. <http://www.aras.ab.ca/transmission-BF.html>.
 "Vertical transmission of HIV through breast milk most likely to occur soon
after birth -- Gottlieb 319 (7210): 594 -- BMJ." Bmj.com:. Web. 29 Sept. 2009.
<http://www.bmj.com/cgi/content/extract/319/7210/594/d>.
 "HIV and AIDS Tutorial." The Biology Project. Web. 01 Oct. 2009.
<http://www.biology.arizona.edu/immunology/tutorials/AIDS/response.html>.