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Geography

Grade 5

Health and well-being

Module 34

Diseases: hiv/aids

HIV / AIDS

Activity 1:

To define a concept

[LO 1.1]

  • After a thorough group discussion, briefly define a definition for HIV as well as for Aids , so that the difference between the two is clear.

This disease has an impact on millions of people on our continent alone, as well as on people all over the world. The fact that there is still no cure for Aids makes it a greatly feared disease.

The HI virus causes the disease Aids

Acquired

Immune

Deficiency

Syndrome

  • Origin and nature:The human body has a built-in immune system that protects it against disease and infection. The HI virus attacks this system and prevents it from functioning successfully. The virus is present in human bodily fluids. It weakens the immune system to such an extent that the body finds it difficult to combat diseases such as TB, pneumonia and diarrhoea. It is only through a blood test that one can determine whether someone has been infected with the virus.As is the case with many other diseases, Aids is spread more readily in densely populated areas, and particularly where people do not eat wholesome food. The HI virus can be transmitted from one person to the other in the following ways:
  • When someone who is infected with the virus has unprotected sex (without a condom) with someone, and the semen or vaginal fluid mixes with that of the other person.
  • When an infected person’s blood mixes with someone else’s blood. This can happen if infected blood is accidentally transfused, or if contaminated injection needles or razor blades are used.
  • A pregnant woman who is infected with the virus can transmit it to her unborn child.

This dreaded disease has spread very rapidly since it was first diagnosed round about 1980.

Activity 2:

To represent statistics by means of a graph

[LO 1.1, 1.7]

  • Use the following statistical information and compile a block graph to represent the increase in the cases of HIV between 1990 and 1999.
Year Percentage of the total population that are estimated to have been infected with HIV
1990 0,7%
1991 1,7%
1992 2,2%
1993 4%
1994 7,6%
1995 10,4%
1996 14,2%
1997 17%
1998 22,8%
1999 22,4%

(Remember to provide clear axis calibration and labels as well as an explanatory caption for your graph.)

  • Typical symptom:
  • a weakened body that is highly susceptible to other diseases.
  • Treatment:

Although Aids is still an incurable disease, sufferers can take certain medication to alleviate the symptoms. However, this type of medication is very expensive.

  • Breakthrough:

The HI virus is a very cunning rogue that penetrates the body silently and then assumes the characteristics of the other cells of the body. In this way it can move around in the body and infect the human immunity cells without being detected. Researchers at the Pasteur Institute in France believe that they are very close to a breakthrough.

Read the newspaper report printed below and have a group discussion on its contents.

breakthrough in fight against aids may be close

(SAPA-AFP)

In what is seen as a possible breakthrough in the fight against HIV/Aids, antibodies have been stimulated that could possibly prevent the HI virus from infecting human immunity cells, French researchers disclosed recently.

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Social sciences: geography grade 5. OpenStax CNX. Sep 23, 2009 Download for free at http://cnx.org/content/col10986/1.2
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