AIDS: Risk Factors and Prevention of Transmission
What is AIDS?
AIDS (acquired immunodeficiency syndrome) is a life-
threatening illness caused by infection with the HIV (human
immunodeficiency virus).
General statements about risks
Although AIDS is preventable, the number of cases of AIDS
will most likely continue to increase over the next five
years and probably into the next century. Cases of AIDS
have been reported in every state. An increasing number of
infections is being diagnosed and treated in both urban and
rural areas, especially among the female partners of
infected men.
AIDS is a life-threatening condition that can be passed on
to other people even though there may be no sign of illness.
HIV damages the immune system. With time, the HIV-infected
person loses the ability to fight off serious infections.
When this phase of HIV infection occurs, the individual is
considered to have AIDS.
AIDS is an emotionally-charged disease because it can be
associated with lifestyles not accepted by all individuals,
it brings with it the realistic concern of premature death,
and because family members and other close contacts of
infected persons often fear catching the disease.
Fortunately, there is ample evidence supporting the view
that people in close, but nonsexual, contact with these
persons do not appear to be at increased risk. People are
at increased risk, however, if they come in contact with
blood, share a needle with, or are born to or breast fed by
an HIV-infected person.
Intravenous-drug users and persons receiving blood
transfusions can be exposed to the virus through infected
blood or blood products. However, spread of the virus from
contaminated transfusions in North America has been greatly
reduced since testing of donated blood for the virus began
in the mid-1980s.
Sexual transmission is mainly the result of exposure to
infected sexual secretions. Both women and men can transmit
the virus sexually. The virus has been detected in semen,
vaginal secretions, tears, and saliva, but exposure to
saliva has not been shown to transmit the infection.
Certain sexual practices increase the risk of exposure among
homosexual and bisexual men. Anal intercourse, injury to
the rectum, and intercourse with numerous partners are
associated with a high risk of getting AIDS.
As the HIV infection spreads through the heterosexual
population there is increasing concern for women and men who
engage in vaginal, anal, and oral intercourse with high-risk
partners. Also, heterosexual intercourse with many partners
increases the risk of exposure.
According to the Centers for Disease Control, as of June
1996, there are no documented cases of HIV infection
resulting from sexual practices of homosexual women.
The following groups are at high risk for contracting HIV
infection and possible development of AIDS:
- sexually-active, homosexual men
- bisexual men and their male and female partners
- intravenous-drug users and their sexual partners
- people who share needles (for IV drug use, tatooing or
piercing)
- heterosexual men and women with more than one partner
- people with medical or surgical conditions (such as blood
clotting disorders) requiring transfusions of blood or
blood products
- people who have received transfusions of blood and blood
products in foreign countries where the blood is not
rigorously screened
- immigrants from areas with many cases of AIDS (such as
Haiti and east central Africa)
- people who have sex with anyone in the above groups
- people who have sex with anyone with AIDS or HIV
infection
- people who share IV needles with anyone in the above
groups
- infants born to HIV infected mothers.
Who should be tested?
You should be tested for HIV if you are or were in a
high-risk group (listed above), have engaged in high-risk
behavior, or especially if you are or plan to become
pregnant.
Where can one go to be tested?
Ask your regular health care provider where you can be
tested or call the Centers for Disease Control National AIDS
Hotline at 1-800-342-AIDS for the locations of the testing
centers near you. Many community health centers, family
planning clinics, hospitals, STD clinics, and county health
departments offer testing. Do not use donating blood as a
way of being tested.
Test results
If your test is negative, it means you have not been
infected with the AIDS virus before two to six months ago.
As long as you do not engage in any high-risk activity and
always practice safe sex, you have almost no risk of
becoming HIV-infected and developing AIDS. If you are or
were at high risk, however, you should discuss with your
health care provider how frequently you should be retested.
If your first test is positive, a second, different test
will be done to confirm that you are infected with the
virus.
If there are questions about your test results, your health
care provider will tell you how soon you should be retested
and what precautions you should take in the meantime.
Prevention of transmission
People with HIV should take these precautions to avoid
transmitting the virus to others:
- Abstaining from sex and high risk behaviors, such as
sharing needles, is the only way to prevent transmission
of the virus. Persons with a positive HIV antibody test
can transmit the virus to partners before learning of
their own infection. Therefore, 'safe sex' should be
practiced to prevent the spread of infection to the
uninfected partner.
- If you are sexually active, to minimize your risk you
should engage only in 'safe sex.' Avoid exchanging blood
and sexual secretions during sex. This means:
- Avoid vaginal and anal intercourse unless latex
condoms are used.
- Avoid oral-genital sex without latex condoms.
- Avoid oral-anal sex.
- Avoid getting semen or blood in cuts or in the eyes.
- Reduce the number of your sexual partners.
- Do not donate, plasma, sperm, body organs, or other
tissue if you are at ANY risk of being HIV positive.
- Do not share or reuse IV needles and syringes. Do not
self-inject drugs unless directed to do so by your
doctor. Do not share needles for tattooing or body
piercing. Boiling does not guarantee sterility of
needles or syringes.
- Do not use nitrate inhalants (poppers).
- Do not share razors, toothbrushes, or anything that could
be contaminated with body fluids or blood.
- Inform health care providers of your positive HIV
antibody status when seeking medical or dental care, so
they can take precautions in handling blood and
specimens. Discuss any concerns you may have about
confidentiality with your health care provider.
- If you work in a dental, medical, or other health care
profession and perform invasive procedures or have skin
sores, use latex gloves to protect patients from risk of
infection.
- Seek medical evaluation and follow-up at least once a
year, or more frequently if your doctor recommends it or
if you develop symptoms that suggest AIDS.
- Discuss pregnancy with your doctor, because HIV may be
transmitted to the baby during pregnancy, delivery, or
breast-feeding. (Zidovudine, also called AZT, has been
shown to decrease transmission of the virus from mother
to baby.)
- Maintain a healthy lifestyle. Eat well, exercise, get
proper rest, and avoid infections. If you are healthy
you may be less likely to develop AIDS, but it will not
prevent transmission of the virus.
Follow these instructions for using latex condoms:
- Use a latex condom every time you have intercourse or
engage in other acts that involve contact with a man's
penis.
- Put the condom on after the penis is erect but before
intimate contact. Sores, any secretions from the penis
(including semen), vaginal secretions, urine, feces, and
possibly saliva can contain sexually transmitted disease
organisms.
- Put the condom on the head of the penis and unroll or
pull it all the way to the base.
- Leave an empty space at the end of the condom to collect
semen. Remove any air remaining in the tip of the condom
by gently pressing the air out toward the base of the
penis.
- If a lubricant is desired, use one that is water-based.
Do not use oil-based lubricants made with petroleum
jelly, mineral oil, vegetable oil, or cold cream, because
these may damage the condom.
- After ejaculation, carefully withdraw the penis while it
is still erect. Hold onto the rim of the condom as you
withdraw so the condom doesn't slip off.
- Store condoms in a cool, dark, dry place.
- If a condom appears sticky, brittle, discolored, or
obviously damaged, don't use it.
- Use each condom only once.
- Use commercial spermicides with condoms (for example,
nonoxynol-9) to further reduce the chance of transmitting
the virus. Do not use spermicides without a condom.
For more information on risk factors or HIV testing, contact
your doctor or the National AIDS Hotline at 1-800-342-AIDS
(24 hours, 7 days a week). Hotline numbers are also
available for Spanish-speaking persons at 1-800-344-7432 (8
a.m. to 2 a.m., EST, 7 days a week), and for the hearing
impaired at TDD 1-800-243-7889 (10 a.m. to 10 p.m., EST,
Monday through Friday). These hotlines are provided by the
Centers for Disease Control and Prevention.
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