Who Said That?
Immunologist Technical
and Professional Communications 12 |
Lesson Idea by: Heather Leask, Gateway
Community Learning Centre, North Okanagan-Shuswap School
District |
|
Having a strong immune system is essential for good health. Your
ability to resist infection governs everything from how well you
feel every day, to how often you get colds, to your chances of
surviving potentially fatal infections. Your immune system is
involved in everything from allergic reactions to why you get
vaccinations.
Immunology is the study of immunity. An immunologist is the
medical scientist who specializes in the study of the immune
system.
"In science, the idea is to question what is written, to be
critical, and to identify problems and errors," says Dr. Ben Koop of
the Molecular Evolution & Immunology Group at the University of
Victoria.
Before any of his work gets published, it goes through a process
called "peer review."
"As an immunologist, all of my work is reviewed by at least three
or four peers," notes Koop. "Everything I write and all of my
research is reviewed, and at the end of three years, when I go to
renew grants, that's also reviewed by a panel of around 10 to 15
peers."
Such review safeguards the accuracy of the information. It's
essential for every scientist, including immunologists, to produce
accurate reports on their work. This allows others to build on their
research, which leads to better understanding of the subject. In the
case of immunology, research saves lives.
"To be comfortable with the credibility of things you read, you
have to know where they're coming from," says Koop. "So in the
levels of credibility, first there are peer review scientific
journals, which are reviewed by at least three peers. Second are
'point of view' articles written by experts, and lastly are
newspapers or popular literature written by non-experts."
In technical reports, immunologist may borrow information from
other sources. In order not to be accused of plagiarising, they must
carefully document those sources. A documented report proves that
the researcher is giving credit where credit is due and that the
findings can be collaborated. |
|
Collect a variety of published materials, including newspapers,
magazines, books, copies of public lectures, scientific journals,
and documents downloaded from the Internet. In groups, review a
selection of the documents.
Find examples of documentation in the articles. Discuss the
following:
- What kinds of sources are being used?
- How are the sources being cited?
- Why would a reader want to know the source of a particular
statement?
Also find examples of information that you think should be
documented. Discuss the following:
- What kinds of information are not sourced?
- Why do you think the information isn't sourced?
- In what cases should a source be cited?
Read the press release in the "Practice file" below. Most of the
attribution in this press release has been deleted. As you read,
make all the places where you, as a reader, you would like to know,
"Who said that?" When you're finished, compare your work to the
"Solution to Practice." This is a copy of the press release as it
appeared online.
Discuss what you've learned with the class. |
|
On your own or in groups, research the answers to the following
questions. Do your research using text books, sources at the local
library, or on the Internet.
- What system of documentation is frequently used in technical
writing?
- What if you can't remember where you got the information?
- Do you document a conversation?
- Where do you put the list of sources?
- How do you document books?
- How do you document magazine and journal articles?
- How do you document reports?
- How do you document correspondence or interviews?
- How do you document brochures?
- How do you document borrowed graphics?
- How do you document electronic sources?
As a class, check your answers against those provided in the
"Solution to Principles" section below. Discuss the results. Did
everyone get the same answers? Where answers are different, figure
out why they are different. Should the same system of documentation
be used in every situation? In what situations would you use a
different style of documentation? |
|
You are an immunologist and you've been asked to edit an article
called "Natural History and Monitoring of HIV RNA in Children." See
it in the "Learn" file below.
The article is in final draft form; the only thing you have to do
is add the sources. Go through the article, adding the documentation
based on the information found in "Resources for Learn" section
below.
Check your work against the document labelled "Solution to
Learn." |
|
You've just learned a great deal about the documentation required
in technical writing. Write a summary of what you've learned, citing
at least four different sources. Your target audience is your
student peers taking Technical and Professional Communications
12.
| Course/Grade:
Technical and Professional Communications 12
|
Curriculum
Organizer(s): ·
Reading, Viewing and Listening (Research 1) · Writing,
Representing, and Speaking (Drafting) |
Curriculum
Sub-organizer(s): · employ a variety of research tools and
resources · independently compile, with reference to
particular purposes, information and ideas from a wide variety
of secondary sources · use appropriate conventions
accurately and consistently to document sources |
Prerequisites: · none |
Resources: · Internet · Technical writing
texts · library |
|
Practice File
|
BULLETIN!
For immediate release: Jan. 31, 1997
Contact: Jo Ann Faber (847) 427-1200 Bob
Szafranski Public Communications Inc. (312) 558-1770
ALLERGISTS CAUTION PARENTS: Don't Stop Children's
Allergy Shots
ARLINGTON HEIGHTS, IL -- Allergists today warned
parents of children with asthma not to stop their
children's allergy shots -- called immunotherapy --
based on a recent study reported this week.
"Children who stop taking the shots could risk
increased, and potentially serious, asthma attacks,"
said a representative of a national health group.
The findings of the study do not reflect the
experience of most practicing allergists and their
patients, and they are inconsistent with most previously
published studies about asthma and immunotherapy.
"Millions of children are being treated effectively
with immunotherapy. It's essential that parents of
asthmatics talk to their doctors before making any
decisions about their children's treatment."
The warning on allergy shots is in response to a
study published Thursday, suggesting allergy shots are
probably unnecessary for children with moderate to
severe asthma who follow a rigid medical regimen and
live in allergen-free homes, a situation some allergists
believe is unrealistic.
"The study looked at a very special group of
children, not typical of a random sample of asthma
sufferers in everyday settings. Researchers monitored
their progress, gave them free allergy medication, and
ensured compliance with optimal medical and
environmental control. Any participants who didn't
comply were dropped from the study."
The study didn't take into account common asthma
triggers, such as cockroaches and certain tree and weed
pollens.
"This study should be put in perspective. This is one
negative study among numerous positive studies that
support immunotherapy, a common and effective treatment
for asthma in children."
In 1995, researchers analyzed 20
allergen-immunotherapy studies conducted between 1960
and 1990 and concluded immunotherapy was effective. The
findings were published in another health journal.
Asthma is an inflammation of the lung airways that
affects more than 12 million Americans, including 4
million children. It results in more than 5,000 deaths
per year.
Parents and others can receive more information about
asthma and asthma treatment by calling ACAAI at
1-800-842-7777.
For more information, please contact: American
College of Allergy, Asthma & Immunology 85 West
Algonquin Road, Suite 550 Arlington Heights, IL
60005 Phone: (847) 427-1200 Fax: (847) 427-1294
| |
|
Solution to Practice
|
This is the press release as it appeared online at
http://allergy.mcg.edu/news/shots.html.
BULLETIN!
For immediate release: Jan. 31, 1997
Contact: Jo Ann Faber (847) 427-1200 Bob
Szafranski Public Communications Inc. (312) 558-1770
ALLERGISTS CAUTION PARENTS: Don't Stop Children's
Allergy Shots
ARLINGTON HEIGHTS, IL, Jan. 31 -- Allergists today
warned parents of children with asthma not to stop their
children's allergy shots -- called immunotherapy --
based on a recent study reported this week.
"Children who stop taking the shots could risk
increased, and potentially serious, asthma attacks,"
said Betty B. Wray, M.D., president of the American
College of Allergy, Asthma & Immunology (ACAAI).
The findings of the study do not reflect the
experience of most practicing allergists and their
patients, and they are inconsistent with most previously
published studies about asthma and immunotherapy, Dr.
Wray said.
"Millions of children are being treated effectively
with immunotherapy," Dr. Wray said. "It's essential that
parents of asthmatics talk to their doctors before
making any decisions about their children's
treatment."
ACAAI's warning on allergy shots is in response to a
study published Thursday in the New England Journal of
Medicine suggesting allergy shots are probably
unnecessary for children with moderate to severe asthma
who follow a rigid medical regimen and live in
allergen-free homes, a situation Dr. Wray and other
allergists believe is unrealistic.
"The study looked at a very special group of
children, not typical of a random sample of asthma
sufferers in everyday settings," Dr. Wray said.
"Researchers monitored their progress, gave them free
allergy medication, and ensured compliance with optimal
medical and environmental control. Any participants who
didn't comply were dropped from the study."
The ACAAI also noted that the study didn't take into
account common asthma triggers, such as cockroaches and
certain tree and weed pollens.
"This study should be put in perspective," Dr. Wray
said. "This is one negative study among numerous
positive studies that support immunotherapy, a common
and effective treatment for asthma in children."
In 1995, Australian researchers analyzed 20
allergen-immunotherapy studies conducted between 1960
and 1990 and concluded immunotherapy was effective. The
findings were published in the American Journal of
Respiratory Critical Care Medicine.
Asthma is an inflammation of the lung airways that
affects more than 12 million Americans, including 4
million children. It results in more than 5,000 deaths
per year.
Parents and others can receive more information about
asthma and asthma treatment by calling ACAAI at
1-800-842-7777.
For more information, please contact: American
College of Allergy, Asthma & Immunology 85 West
Algonquin Road, Suite 550 Arlington Heights, IL
60005 Phone: (847) 427-1200 Fax: (847) 427-1294
| |
|
Solution to Principles
|
"It's foremost for all researchers to practice the
very highest degree of integrity because your entire
reputation is based on being honest and speaking
truthfully," says Dr. Ben Koop of the University of
Victoria.
Because your reputation is based on the accuracy of
the information you provide, it's crucial to provide
proper documentation for all the sources that you use in
your research findings.
Here are the answers to the 11 questions in the Learn
section. The answers to the first 10 questions are used
with permission of:
Dr. David McMurrey, author of the
"Internet Technical Writing Course Guide" http://uu-gna.mit.edu:8001/uu-gna/text/wamt/acchtml/acctoc.html
The answer to the question 11 is complex. As the
Internet is relatively new, there are many varying
opinions on how to cite electronic sources. A sample
answer to question 11 is provided using the following
source:
Janice R. Walker, author of "Columbia
Online Style: MLA-Style Citations of Electronic
Sources," Version 1.2, Nov. 1997 http://www.cas.usf.edu/english/walker/mla.html
1. The number system of documentation is frequently
used in technical writing.
2. If you honestly can't remember where you got
some information, then you may consider that it has
become common knowledge for you and does not need to
be documented.
3. You must document all information, whether it's
in print, heard in a conversation or interview, or
obtained electronically.
4. Place the list of sources at the end of your
document.
5. To document books, put the name of the author
first (first name last), followed by a period,
followed by the title of the book (in italics if you
have them; otherwise, underline), followed by a
period, followed by the city of the publisher,
followed by a colon; followed by the publisher's name
(delete details like "inc.," "Co.," and Ltd."),
followed by the year of publication, ending with a
period. In this style, you don't indicate the
pages.
6. To document magazine and journal articles, start
with the author's name first (last name first),
followed by a period, then the title of the article in
quotation marks and ending with a period, followed by
the name of the magazine or journal (in italics if you
have them; otherwise, underline), followed by a
period, followed by the date of issue of the magazine
the article appears in, followed by the beginning and
ending page. If the article spreads across the
magazine you can write "33+." or "33(5)." The latter
style seems to be taking hold; in it, you estimate how
many pages the article would be if it were
continuous.
If there is no author, start with the article or
book title. If there are two authors, add "and" and
the second author's name, first name first. If there
are too many authors, use the first one (last name
first), followed by "et al.," which means "and
others."
7. When documenting reports, you're likely to be
dealing with government or local, informally produced
reports. With most reports, you may not have an
individual author name; in such cases, you use the
group name as the author. For government reports, the
publisher is often the Government Printing Office
(Queen's Printer); and the city of publication
Washington, D.C. (Ottawa, Ont.) Also, for government
documents, you should include the document number.
8. When it comes to correspondence or interviews,
you treat the interviewee or letter writer as the
author, follow that name with the person's title,
followed by a period, then the company name, followed
by a period, then what the information was ("Personal
interview" or "Personal correspondence") followed by a
period, then the city and state, followed by a period,
ending with the date.
9. For information sources like brochures, treat
the company name as the author, followed by a period,
use something identifying like the product name
(including the specific model number), followed by
anything that seems like the title of the brochure,
followed by a period, ending with a date if you can
find one (otherwise, put "N.d.").
10. Document borrowed graphics by indicating the
source in the figure title, which is located just
below the graphic. Provide the complete bibliographic
details, plus the page number. See the example
below:
Figure 3. Advanced MicroWidget Device. The new
device of the whatzit reduces the requirements on the
base system, while not compromising performance.
Source: Alfred Newperson, Widget Design: The 1990s and
Beyond (Summe City: Noveau, 1990), 32
11. The basic components to documenting electronic
sources are:
Author's last name, Author's first name. "Title of
Document." Title of Complete Work (if applicable).
Version or File Number, if applicable. Document date
or date of last revision (if different from access
date). Protocol and address, access path or
directories (date of
access). | |
|
Learn
|
This is the article in which you must place the
documentation for the information.
Natural History and Monitoring of HIV RNA in
Children
Viral burden in the peripheral blood can be
determined using quantitative HIV RNA assays. During
primary infection in adults, there is an initial rise in
HIV RNA copy number to very high peak levels. Coincident
with the body's humoral and cell mediated immune
response there is a sharp decline in RNA levels by as
much as 2 to 3 log copies to reach a stable lower level
10 ("virologic set-point") approximately 6 to 12 months
following acute infection, reflecting the balance
between ongoing viral production and immune elimination.
Several studies in adults have shown that infected
individuals with lower HIV copy number at the time of
RNA stabilization have slower progression and improved
survival compared to those with high HIV RNA set points.
Based on such data, recommendations for use of HIV RNA
copy number in deciding to initiate and change
antiretroviral therapy in infected adults have been
made; these recommendations are also applicable to
infected adolescents, particularly those adolescents who
have acquired HIV infection via drug use and/or sexual
contact. Many Working Group members also believe that
these recommendations are applicable to
perinatally-infected children older than 3 years of
age.
The HIV RNA pattern among perinatally-infected
infants differs from that seen in infected adults. Very
high HIV RNA copy numbers appear to persist among
infected children for prolonged periods. In one large
prospective study, HIV RNA levels were generally low at
birth (<10,000 copies/mL), rose to extremely high
values within the first 2 months of life (most infants
had values >100,000 copies/mL, ranging from
undetectable in rare infants to nearly 10 million
copies/mL), and then fell very slowly; the mean HIV RNA
level during the first year of life was 185,000
copies/mL. Additionally, in contrast to the adult
pattern, after the first year of life, HIV RNA copy
number only slowly declines over the next few years of
life. This pattern likely reflects the lower efficiency
of an immature but developing immune system in
containing viral replication, and possibly a greater
number of HIV-susceptible cells in the infant.
Recent data indicate that very high HIV RNA levels in
infants under 12 months of age (over 300,000 copies/mL)
may be correlated with disease progression and death;
however, there was considerable overlap in RNA levels
between rapid and non-rapid progressors. High RNA levels
(above 100,000 copies/mL) in young infants have also
been shown to be associated with high risk for disease
progression and mortality, particularly if the CD4+
lymphocyte percentage is under 15%. (Tables 4-6) Similar
findings have been reported in a preliminary analysis of
data from pediatric clinical trial PACTG 152 correlating
baseline virologic data with risk of disease progression
or death during study follow-up. (Table 6) In this
study, there was a 54% reduction in the relative risk of
progression for each 1 log decrease in baseline HIV RNA
level. Disease progression was 10 documented in 11% of
children 30 months old or less at entry (mean age, 1.1
years) with baseline RNA in the lowest quartile
(undetectable to 150,000 copies/mL) compared to 52% of
those with baseline RNA in the highest quartile
(>1,700,000 copies/mL). Among children over 30 months
old at entry (mean age, 7.3 years), none of those with
baseline RNA in the lowest quartile (undetectable to
15,000 copies/mL) compared to 34% of those in the
highest quartile (>150,000 copies/mL) had
progression; children with RNA levels in the middle 2
quartiles (15,000 to 50,000 and 50,000 to 150,000
copies/mL) had similar progression rates (13% and 16%,
respectively). The data from children over 30 months of
age are similar to data from studies among infected
adults, where the risk of disease progression
dramatically increases when HIV RNA levels exceed 10,000
to 20,000 copies/mL.
Despite these data, the predictive value of specific
HIV RNA levels for disease progression and death for an
individual child is relatively poor. HIV RNA levels may
be particularly difficult to interpret during the first
year of life because levels are extremely high and there
is marked overlap in levels between rapid and non-rapid
progressors. Additional data indicate that baseline as
well as changes in HIV RNA copy number and CD4+
lymphocyte percent over time each independently
contribute to prediction of mortality risk in infected
children, and the use of the 2 markers together may more
accurately define prognosis. Similar data and
conclusions have recently been reported from several
studies in infected
adults. | |
|
Resources for Learn
|
Build your documentation drawing from the information
below. Please note that instead of article titles, brief
descriptions of the studies are provided. References do
not appear in the same order here as they are required
in the article.
- The hypothesis that HIV viral load early in life
can predict the course of the disease in infected
babies was covered at the 11th International
Conference on AIDS held in Vancouver, Canada July
7-12. Involved in the study were EJ Abrams, JC Weedon,
G Lambert, R Steketee who are involved in the New York
City Perinatal HIV Transmission Collaborative Study.
Details were published in the conference Abstract
We.B.311.
- A team of researchers including TL Katzenstein, C.
Pedersen, C. Nielson, JD Lundgren, PH Jakobsen, and J
Gerstoft found that there is a quick decline in RNA
levels following acute infection in their longitudinal
serum HIV RNA quantification work. This confirmed the
data also reported by DR Henrard and others in 1995.
The results of the Katzenstein study were found on
pages 167-173 of issue 10 of the journal called AIDS.
It was published in 1996.
- The Journal of Infectious Disease
(1997;175:1029-38) reported in 1997 on a study by LM
Mofenson, J Korelitz, WA Meyer and other researchers
about the relationship between serum human
immunodeficiency virus type 1 (HIV-1) RNA level, CD4
lymphocyte percent, and long-term mortality risk in
HIV-1-infected children.
- Both Mellors and Clementi studies showed that
infected adults with high HIV RNA set points are less
likely to survive than those with lower set points.
- M Clementi worked with S Menzo, P Bagnarelli and
others on a study about the clinical use of
quantitative molecular methods in studying human
immunodeficiency virus type 1 infection. The study
appeared in Clinical Microbiological Reviews in 1996,
on pages 135-147 of issue 9.
- In 1997 the Public Health Service in Washington,
DC hosted a Panel on Clinical Practices for Treatments
of HIV Infection. The panel set out the guidelines for
the use of antiretroviral agents in HIV-infected
adults and adolescents.
- Researchers including MD Hughes, VA Johnson, and
MS Hirsch reported on their study involving the
monitoring plasma HIV-1 RNA levels in addition to CD4+
lymphocyte count. They found this improves the
assessment of a patient's response to antiretroviral
therapeutic measures. Reported in the journal: Annals
of Internal Medicine, 1997; 126:929-38.
- JW Mellors worked with LA Kingsley and CR Rinaldo
and some others on his study: Quantification of HIV-1
RNA in plasma predicts outcome after seroconversion.
The study appeared in Annals of Internal Medicine in
1995. It was published in issue 122 on pages 573-579.
- Infants infected with HIV were the focus of a
study by a team of researchers led by WT Shearer, TC
Quinn, P LaRussa. They studied the progress of the
disease and changes in viral load. Their results were
published in the New England Journal of Medicine, in
1997, Issue 336, pages 1337-1342.
- Researchers including PE Palumbo, SH Kwok, and S
Waters, published the results of their work on viral
measurement by polymerase chain reaction-based assays
in infants with HIV in the Journal of Pediatrics 1995;
issue 126, pages 592-595.
- A study on age- and time-related changes in
extracellular viral load in children vertically
infected by human immunodeficiency virus done by K
McIntosh, A Shevitz, D Zaknun, and others was reported
on in the Pediatric Infectious Diseases Journal in
1996; Issue 15, pages 1087-91.
- Those attending the 4th Conference on Retroviruses
and Opportunistic Infections held in Washington, D.C.
Jan. 22-26, 1997 learned more about the Correlation of
HIV plasma RNA levels with clinical outcome in a large
pediatric trial conducted by PE Palumbo, C Raskino, S
Fiscus, and others. Cited in the conference
proceedings 208 (Abs.LB14).
- The Annals of Internal Medicine published an
article by JW Mellors, A Munoz, JV Giorgi, on the
subject of plasma viral load and CD4+ lymphocytes as
prognostic markers of HIV-1 infection. Published in
1997. Issue 126, pages 946-54.
- Changes in plasma HIV RNA levels and CD4+
lymphocyte counts predict both response to
antiretroviral therapy and therapeutic failure,
reported WA O'Brien, PM Hartigan, ES Daar, MS
Simberkoff, and JD Hamilton, for the VA Cooperative
Study Group on AIDS in the Annals of Internal Medicine
in 1997, Issue 126, pages 939-45.
- DR Henrard worked with JF Phillips and LR Muenz
and other researchers developed a study on the natural
history of cell-free viremia. Their study was
published in 1995 in the Journal of the American
Medical Association. It appeared in issue 274 on pages
554-558.
| |
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Solution to Learn
|
Compare your work with the article as it was
published:
This document was taken from the HIV InSite, (http://hivinsite.ucsf.edu/)
an information site on HIV sponsored by various
organizations. The article is no longer online.
Natural History and Monitoring of HIV RNA in
Children
Viral burden in the peripheral blood can be
determined using quantitative HIV RNA assays. During
primary infection in adults, there is an initial rise in
HIV RNA copy number to very high peak levels. Coincident
with the body's humoral and cell mediated immune
response there is a sharp decline in RNA levels by as
much as 2 to 3 log copies to reach a stable lower level
10 ("virologic set-point") approximately 6 to 12 months
following acute infection, reflecting the balance
between ongoing viral production and immune
elimination.(Katzenstein 96, Henrard 95) Several studies
in adults have shown that infected individuals with
lower HIV copy number at the time of RNA stabilization
have slower progression and improved survival compared
to those with high HIV RNA set points.(Mellors 95,
Clementi 96) Based on such data, recommendations for use
of HIV RNA copy number in deciding to initiate and
change antiretroviral therapy in infected adults have
been made (Panel 97); these recommendations are also
applicable to infected adolescents, particularly those
adolescents who have acquired HIV infection via drug use
and/or sexual contact. Many Working Group members also
believe that these recommendations are applicable to
perinatally-infected children older than 3 years of
age.
The HIV RNA pattern among perinatally-infected
infants differs from that seen in infected adults. Very
high HIV RNA copy numbers appear to persist among
infected children for prolonged periods. (Palumbo 95,
Abrams 96) In one large prospective study, HIV RNA
levels were generally low at birth (<10,000
copies/mL), rose to extremely high values within the
first 2 months of life (most infants had values
>100,000 copies/mL, ranging from undetectable in rare
infants to nearly 10 million copies/mL), and then fell
very slowly; the mean HIV RNA level during the first
year of life was 185,000 copies/mL. (Shearer 97)
Additionally, in contrast to the adult pattern, after
the first year of life, HIV RNA copy number only slowly
declines over the next few years of life. (McIntosh 96,
Shearer 97, Mofenson 97, Palumbo 97) This pattern likely
reflects the lower efficiency of an immature but
developing immune system in containing viral
replication, and possibly a greater number of
HIV-susceptible cells in the infant.
Recent data indicate that very high HIV RNA levels in
infants under 12 months of age (over 300,000 copies/mL)
may be correlated with disease progression and death;
however, there was considerable overlap in RNA levels
between rapid and non-rapid progressors. (Shearer 97,
Abrams 96) High RNA levels (above 100,000 copies/mL) in
young infants have also been shown to be associated with
high risk for disease progression and mortality,
particularly if the CD4+ lymphocyte percentage is under
15%. (Mofenson 97, Palumbo 97) (Tables 4-6) Similar
findings have been reported in a preliminary analysis of
data from pediatric clinical trial PACTG 152 correlating
baseline virologic data with risk of disease progression
or death during study follow-up. (Table 6) (Palumbo 97)
In this study, there was a 54% reduction in the relative
risk of progression for each 1 log decrease in baseline
HIV RNA level. Disease progression was 10 documented in
11% of children 30 months old or less at entry (mean
age, 1.1 years) with baseline RNA in the lowest quartile
(undetectable to 150,000 copies/mL) compared to 52% of
those with baseline RNA in the highest quartile
(>1,700,000 copies/mL). (Palumbo 97) Among children
over 30 months old at entry (mean age, 7.3 years), none
of those with baseline RNA in the lowest quartile
(undetectable to 15,000 copies/mL) compared to 34% of
those in the highest quartile (>150,000 copies/mL)
had progression; children with RNA levels in the middle
2 quartiles (15,000 to 50,000 and 50,000 to 150,000
copies/mL) had similar progression rates (13% and 16%,
respectively). The data from children over 30 months of
age are similar to data from studies among infected
adults, where the risk of disease progression
dramatically increases when HIV RNA levels exceed 10,000
to 20,000 copies/mL. (Panel Rec 97)
Despite these data, the predictive value of specific
HIV RNA levels for disease progression and death for an
individual child is relatively poor. (Mofenson 97) HIV
RNA levels may be particularly difficult to interpret
during the first year of life because levels are
extremely high and there is marked overlap in levels
between rapid and non-rapid progressors. (Palumbo 95)
Additional data indicate that baseline as well as
changes in HIV RNA copy number and CD4+ lymphocyte
percent over time each independently contribute to
prediction of mortality risk in infected children, and
the use of the 2 markers together may more accurately
define prognosis. (Mofenson 97, Palumbo 97) Similar data
and conclusions have recently been reported from several
studies in infected adults.(Mellors 97, O'Brien 97,
Hughes
97) | | |
|