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Transcript
Lesson
4
Treatment for HIV and AIDS
Do you think HIV is a curable disease?
Even though medicines can
slow the progress of HIV
infection, there is still no
vaccine that prevents the
disease.
Lesson
4
Lesson Objectives
In this lesson, you will learn to:
• Examine how technology has impacted the health of
persons with HIV
• Identify world and community health services available
for people living with HIV/AIDS
• Develop refusal skills and ways to avoid unsafe
situations
Lesson
4
Stages of HIV Infection
How HIV Develops
• A person is considered infectious immediately after
contracting the virus.
• Approximately half of all persons develop symptoms such
as fever, rash, headache, body aches, and swollen glands
about three to six weeks after becoming infected with HIV.
• These symptoms disappear within a week to a month and
the person enters the asymptomatic stage.
• A person may show no signs of illness for 6 months to 10
years or more, though the viruses continue to grow and
the infected person can still transmit the virus to others.
Lesson
4
Stages of HIV Infection
Symptomatic HIV Infection
• During the asymptomatic stage, the immune system
keeps pace with HIV infection by producing billions of
new cells.
• Eventually the numbers of cells in the immune system
decline to the point where other infections start to take
over, and this marks the symptomatic stage.
• The symptoms may include swollen glands, weight loss,
and yeast infections.
Lesson
4
Stages of HIV Infection
AIDS
• During the latter stage of HIV infection, more serious
symptoms appear until the infection meets the official
definition of AIDS.
• These symptoms include the presence of HIV infection, a
severely damaged immune system measured by numbers
of helper T cells, and the appearance of one or more
opportunistic infections or illnesses.
• By the time AIDS develops, HIV has often attacked brain
cells, causing difficulty in thinking and remembering.
Lesson
4
Detecting HIV
EIA Test
The first test usually performed is an ELISA, or EIA.
The EIA may give inaccurate results for two reasons:
• Developing antibodies takes
time.
• Certain health conditions such
as hemophilia, hepatitis, and
pregnancy.
Lesson
4
Detecting HIV
Developing Antibodies Takes Time
• Developing antibodies takes weeks or even months after
initial infection.
• Before antibodies develop, the EIA may give a false
negative result.
• This result means the test is negative, but the person is
positive.
• Most people will test positive in three to four weeks, but
some people take up to six months to test positive.
Lesson
4
Detecting HIV
Certain Health Conditions
• Health conditions such as hemophilia, hepatitis, and
pregnancy can cause the EIA to give a false positive
reading.
• This means that although the test was positive, the
person actually does not have the infection.
Lesson
4
Detecting HIV
Western Blot Test
• If the EIA test is positive, it can be repeated to make sure
the results are accurate.
• If the repeat test is also positive, other confirmation tests,
such as the Western blot (WB) test, will be done.
• If done properly, this test is 100 percent accurate.
• If the results of all three of these tests are positive, a
person is determined to have HIV.
Lesson
4
The Impact of the Availability of Health Services
Difficulties with Treating HIV
• None of the drugs and vaccines being researched cure
HIV/AIDS because HIV infects the very cells that regulate
the immune response.
• Several new strains of the virus have emerged since it was
first discovered, making it even harder to develop an
effective treatment.
• Some people stop treatment or take medicines only once in
a while due to severe side effects, which can lead to the
development of new, drug-resistant strains of the virus.
• Treatment can be costly, exceeding $1,000 a month.
Lesson
4
HIV/AIDS—A Continuing Problem
Drug-Resistant Strains of HIV
• Much of the decrease in AIDS cases results from the
success of drug cocktails—combinations of drugs—that slow
the progression of HIV infection.
• This success has brought a false security about the need
for HIV prevention.
• However, research has identified new, drug-resistant strains
of HIV.
• The combination of drug resistance and high-risk behaviors
could result in HIV strains that are transmitted and spread
even more widely.
Lesson
4
HIV/AIDS—A Continuing Problem
HIV/AIDS: The Global Picture
• At the end of 2002, an estimated 40 million people
worldwide were infected with HIV/AIDS.
• This statistic means that HIV is now pandemic.
• The number of people living with HIV is growing.
Lesson
4
HIV/AIDS—A Continuing Problem
Staying Informed About HIV/AIDS
• Knowledge is the first defense against infection from HIV.
• New research can be found in newspapers and magazines
and on television, radio, and the Internet.
• The CDC, state health departments, and community health
services are excellent sources of information.
• Teachers, school counselors, and physicians can provide
guidance on how to find information.
Lesson
4
HIV/AIDS—A Continuing Problem
Abstinence and HIV/AIDS
• During your teen years, you may feel pressure to
experiment with new behaviors, such as engaging in
sexual activity or using drugs.
• Consider that your actions today can change the entire
course of your life.
• Choosing to remain abstinent shows that you are taking an
active role in caring for your own health and acting
responsibly by not jeopardizing the well-being of others.
Lesson
4
HIV/AIDS—A Continuing Problem
Refusal Skills to Avoid Sexual Activity and Drugs
Avoid situations and events where drug use or the
pressure to engage in sexual activity is likely to
occur.
Be firm when you refuse to take part in drug use or
sexual activity and use body language as well as
words to get your message across.
Avoid forming a dating relationship with someone
whom you know to be sexually active or a drug user.
Lesson
4
Quick Review
Choose the appropriate option.
Q. Asymptomatic HIV infection is a
period of time during which a
person infected with HIV has no
symptoms.
True
False
Lesson
4
Quick Review - Answer
A. True. Asymptomatic HIV infection is a period of time
during which a person infected with HIV has no
symptoms.
Click Next to attempt another question.
Lesson
4
Quick Review
Choose the appropriate option.
Q. If the EIA test is positive, it is
repeated to make sure the results
are accurate. If the repeat test is
also positive, a confirmation test,
such as the Western blot, is
performed.
True
False
Lesson
A.
4
Quick Review - Answer
True. If the EIA test is positive, it is repeated to make
sure the results are accurate. If the repeat test is also
positive, a confirmation test, such as the Western blot
is performed.
Click Next to attempt another question.
Lesson
4
Quick Review
Choose the appropriate option.
Q. New therapies have extended the
lives of people with HIV/AIDS but
have caused some to believe that
HIV/AIDS is a bigger threat than
ever.
True
False
Lesson
4
Quick Review - Answer
A. False. New therapies have extended the lives of people
with HIV/AIDS but have caused some to believe that
HIV/AIDS is a no longer a threat.
Click Next to attempt another question.
Lesson
4
Quick Review
Choose the appropriate option.
Q. People in the United States have no
better access to AIDS treatment
than do people in developing
nations.
True
False
Lesson
4
Quick Review - Answer
A. False. People in the United States have better access to
AIDS treatment than do people in developing nations.
Click Next to attempt another question.
Lesson
4
End of Lesson 4
Click Home to view the Main menu.
Lesson
4
Stages of HIV Infection
How HIV Develops
• A person is considered infectious immediately after
The asymptomatic
contracting the virus.
stage is a period of
• Approximately half of all persons
develop
symptoms
such
time during
which
a
as fever, rash, headache, body
aches,
and swollen
glands
person
infected
with
about three to six weeks after
infected with HIV.
HIV becoming
has no symptoms.
• These symptoms disappear within a week to a month and
the person enters the asymptomatic stage.
• A person may show no signs of illness for 6 months to 10
years or more, though the viruses continue to grow and
the infected person can still transmit the virus to others.
Lesson
4
Stages of HIV Infection
Symptomatic HIV Infection
The symptomatic
stage
is thesystem
stage in
• During the asymptomatic stage, the
immune
which a person
keeps pace with HIV infection by producing
billionsinfected
of
with HIV has symptoms
new cells.
as a result of a severe
in immune
cells.
• Eventually the numbers of cells in drop
the immune
system
decline to the point where other infections start to take
over, and this marks the symptomatic stage.
• The symptoms may include swollen glands, weight loss,
and yeast infections.
Lesson
4
Detecting HIV
EIA Test
The first test usually performed is an ELISA, or EIA.
The EIA may give inaccurate results for two reasons:
EIA is a test
• Developing antibodies takes that screens for
the presence of
time.
HIV antibodies in
the blood.
• Certain health conditions such
as hemophilia, hepatitis, and
pregnancy.
Lesson
4
Detecting HIV
Western Blot Test
• If the EIA test is positive, it can be repeated to make sure
the results are accurate.
• If the repeat test is also positive, other confirmation tests,
such as the Western blot (WB) test, will be done.
• If done properly, this test is 100 percent accurate.
The Western
blot, or WB, is the
• If the results of all three of these tests are positive, a
most common
person is determined to have HIV.
confirmation test for
HIV in the United
States.
Lesson
4
HIV/AIDS—A Continuing Problem
HIV/AIDS: The Global Picture
• At the end of 2002, an estimated 40 million people
worldwide were infected with HIV/AIDS.
• This statistic means that HIV is now pandemic.
• The number of people living with HIV is growing.
Pandemic
refers to a global
outbreak of
infectious
disease.
Lesson
4
Quick Review - Answer
A. Correct! Asymptomatic HIV infection is a period of time
during which a person infected with HIV has no
symptoms.
Click Next to attempt another question.
Lesson
4
Quick Review - Answer
You have answered the question incorrectly. Go back to try
again, or click Next to view the correct answer.
Lesson
4
Quick Review - Answer
A. Correct! If the EIA test is positive, it is repeated to make
sure the results are accurate. If the repeat test is also
positive, a confirmation test, such as the Western blot is
performed.
Click Next to attempt another question.
Lesson
4
Quick Review - Answer
You have answered the question incorrectly. Go back to try
again, or click Next to view the correct answer.
Lesson
4
Quick Review - Answer
A. Correct! New therapies have extended the lives of
people with HIV/AIDS but have caused some to believe
that HIV/AIDS is a no longer a threat.
Click Next to attempt another question.
Lesson
4
Quick Review - Answer
You have answered the question incorrectly. Go back to try
again, or click Next to view the correct answer.
Lesson
4
Quick Review - Answer
A. Correct! People in the United States have better access
to AIDS treatment than do people in developing nations.
Click Next to attempt another question.
Lesson
4
Quick Review - Answer
You have answered the question incorrectly. Go back to try
again, or click Next to view the correct answer.