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Budding baseball player in havana

Photograph courtesy of Robert Leon

Contamination

If blood from a person infected by HIV gets into the blood stream of another person, it will infect them also with the HIV. Thiscan happen:

  • If contaminated instruments are used to pierce the skin during:
    • injections
    • circumcision
    • scarrification
    • ear piercing
    • tatooing
    • acupuncture
    (Infection can be prevented if the equipment used is brand new, or is carefully sterilized each time it is used.)
  • From a blood transfusion with infected blood

Blood transfusions may be necessary:

  • after a bad accident, if someone has lost a lot of blood;
  • during a hospital operation;
  • after childbirth, if the mother has lost much blood; or
  • if a person is anaemic due to bilharzia, hookworm or malaria parasites.

If the blood or equipment used is contaminated with HIV, this will be transmitted to the person receiving the blood, and so theywill also become infected.

All equipment used for blood transfusions should be sterilized before it is used. In some countries all blood which has beendonated is tested for HIV infection, and only non-infected blood is used. More and more countries are now trying to do this.

There is no risk in donating blood if the equipment is new or properly sterilized.

(For reading source, click here .)

How does aids affect the eyes?

Cotton Wool Spots - AIDS can cause tiny amounts of bleeding and white spots in the retina. These white spots are called cotton woolspots.

CMV Retinitis - A serious infection of the retina is caused by cytomegalovirus (CMV).

About 20-30% of people with AIDS have CMV. Most infections happen when the number of T-cells gets dangerously low, usuallyunder 40. CMV can damage the eyes permanently.

Signs of CMV include:

  • Floating Spots
  • Flashing Lights
  • Blind Spots or Blurred Vision

Red Eye - People with AIDS sometimes have persistent infections.

Detached Retina - Sometimes CMV causes the retina to separate from the back of the eye. A detached retina can cause a seriousvision loss. Surgery is the only means of reattaching a detached retina.

Kaposi's Sarcoma - Kaposi's sarcoma (KS) is a kind of tumor that looks like a bump on the eyelid or a spot on the white part of the eye. KSgrows slowly and does not harm the eye.

What are the treatments for AIDS eye problems?

There are two drugs to fight CMV infections. These drugs do not cure CMV, only slow it down. It is important to see anophthalmologist for regular eye exams in case CMV flares up. Early detection of CMV is vital to a positive outcome and if only one eye isinfected, the patient can protect the other eye by taking anti-CMV medicines.

Kaposi's sarcoma can be treated with radiation, laser surgery, freezing or surgery.

Each disease has its own treatment. An ophthalmologist should be consulted for an accurate diagnosis.

Nutrition

HIV/AIDS and malnutrition are interrelated. In fact, in Africa AIDS was initially known as 'slim disease' because of the wastingsyndrome typically experienced by people with the disease. Research suggests that malnutrition increases the risk of progression of HIVinfection, and it may also increase the risk of HIV transmission from mother to baby. In turn, HIV infection makes malnutrition worse through itsattacks on the immune system and its impact on nutrient intake, absorption and the body's use of food. Malnutrition associated with HIV infection hasserious and direct implications for the quality of life of people with HIV/AIDS. Weight loss is often the event that begins a vicious circle ofincreased fatigue and decreased physical activity, including the inability to prepare and consume food and reduced work productivity.

Questions & Answers

A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
Aislinn Reply
cm
tijani
what is titration
John Reply
what is physics
Siyaka Reply
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
Jude Reply
Can you compute that for me. Ty
Jude
what is the dimension formula of energy?
David Reply
what is viscosity?
David
what is inorganic
emma Reply
what is chemistry
Youesf Reply
what is inorganic
emma
Chemistry is a branch of science that deals with the study of matter,it composition,it structure and the changes it undergoes
Adjei
please, I'm a physics student and I need help in physics
Adjanou
chemistry could also be understood like the sexual attraction/repulsion of the male and female elements. the reaction varies depending on the energy differences of each given gender. + masculine -female.
Pedro
A ball is thrown straight up.it passes a 2.0m high window 7.50 m off the ground on it path up and takes 1.30 s to go past the window.what was the ball initial velocity
Krampah Reply
2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
Sahid Reply
you have been hired as an espert witness in a court case involving an automobile accident. the accident involved car A of mass 1500kg which crashed into stationary car B of mass 1100kg. the driver of car A applied his brakes 15 m before he skidded and crashed into car B. after the collision, car A s
Samuel Reply
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
Joseph Reply
Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
Joseph
Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
Joseph
"Generation of electrical energy from sound energy | IEEE Conference Publication | IEEE Xplore" ***ieeexplore.ieee.org/document/7150687?reload=true
Ryan
what's motion
Maurice Reply
what are the types of wave
Maurice
answer
Magreth
progressive wave
Magreth
hello friend how are you
Muhammad Reply
fine, how about you?
Mohammed
hi
Mujahid
A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?
yasuo Reply
Who can show me the full solution in this problem?
Reofrir Reply
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Source:  OpenStax, Hiv-aids for educators. OpenStax CNX. Mar 07, 2006 Download for free at http://cnx.org/content/col10329/1.6
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