Project on AIDS for class 12th

Today we will see how to make project on 'Project on AIDS for class 12th' this project is only for class 12th student and this project is belongs to 'human health and disease' in this project we will cover following steps

1. AIDS
2. Causes of AIDS
3. Symptoms of HIV- AIDS
4. Diagnose of AIDS
5. Treatment of HIV- AIDS
6. Recent development in AIDS
Treatment
7. HIV Prevention
8. Conclusion
9. Hypothesis

10. Bibliography
                                   

                                     AIDS:

     (Acquired Immuno Deficiency Syndrome)

AIDS (Acquired immune deficiency syndrome or acquired immunodeficiency syndrome) is a syndrome caused by a virus called HIV (Human Immunodeficiency Virus). The illness alters the immune system, making people much more vulnerable to infections and diseases. This susceptibility  worsens as the syndrome progresses. HIV is found in the body fluids of an infected person (semen and vaginal fluids, blood and breast milk). The virus is passed from one person
to another through bloodto- blood and sexual contact. In addition, infected pregnant women can pass HIV to their babies during pregnancy, delivering the baby during childbirth, and through breast feeding.HIV can be transmitted in many ways, such as vaginal, oral sex, anal sex, blood transfusion, and contaminated hypodermic needles

“The red ribbon is the worldwide symbol of support and

awareness for people living with HIV.”

Both the virus and the syndrome are often referred to together as HIV/AIDS.People with HIV have what is called HIV infection. As a result, some will then develop AIDS.

The development of numerous opportunistic infections in an AIDS patient can ultimately lead to death.

According to research, the origins of HIV date back to the late nineteenth or early twentieth century in west-central Africa. AIDS and its cause, HIV, were first identified and recognized in the early 1980s.

There is currently no cure for HIV or AIDS. Treatments can slow the course of the condition - some infected people can live a long and relatively healthy life.

✓ HIV is the virus which attacks the
T-cells in the immune system.

✓ AIDS is the syndrome which
appears in advanced stages of
HIV infection.

✓ HIV is a virus.


✓ AIDS is a medical condition
HIV infection causes AIDS to develop.However, it is possible to be infected with HIV without developing AIDS. Without treatment, the HIV infection is allowed to progress and eventually it will develop into AIDS in the vast majority of cases. HIV testing can identify infection in the early stages. This allows the patient to use prophylactic (preventive) drugs which will slow the rate at which the virus replicates, delaying the onset of AIDS. AIDS patients still have the HIV virus and are still infectious. Someone with AIDS can pass HIV to someone else.

            Causes of HIV/AIDS

HIV is a retrovirus that infects the vital organs of the human immune system.The virus progresses in the absence of antiretroviral therapy. The rate of virus progression varies widely between individuals and depends on many factors (age of the patient, body's ability to defend against HIV, access to health care, existence of coexisting infections, the infected person's genetic inheritance, resistance to certain strains of HIV).

HIV can be transmitted through:

Sexual transmission. It can happen when there is contact with infected sexual secretions (rectal, genital or oral mucous membranes). This can happen while having unprotected sex, including vaginal, oral and anal sex or sharing sex toys with someone infected with HIV.

Prenatal transmission. The mother can pass the infection on to her child during childbirth, pregnancy, and also through breastfeeding.

Blood transmission. The risk of transmitting HIV through blood transfusion is nowadays extremely low in developed countries, thanks to meticulous screening and precautions. Among drug users, sharing and reusing syringes contaminated with HIV-infected blood is extremely hazardous.

      Symptoms of HIV and AIDS

What is the difference between a sign and a symptom?

A sign is something other people, apart from the patient can detect, such as a swelling, rash, or change in skin colour. A symptom is something only the patient feels and describes, such as a headache, fatigue, or dizziness.

For the most part, the symptoms of HIV are the result of infections caused by bacteria, viruses, fungi and parasites. These conditions do not normally develop in individuals with healthy immune systems, which protect the body against infection.

 Symptoms of early HIV infection

Many people with HIV have no symptoms for several years. Others may develop symptoms similar to flu, usually two to six weeks after catching the virus. The symptoms can last up to four weeks.

Symptoms of early HIV infection may include:

fever

chills

joint pain

muscle ache

sore throat

sweats (particularly at night)

enlarged glands

a red rash

tiredness

weakness

weight loss

   Asymptomatic HIV infection

In many cases, after the initial symptoms disappear, there will not be any further symptoms for many years. During this time, the virus carries on developing and damages the immune system. This process can take up to 10 years. The infected person will experience no symptoms, feel well and

appear healthy.

     Late-stage HIV infection

If left untreated, HIV weakens the ability to fight infection. The person becomes vulnerable to serious illnesses. This stage of infection is known as AIDS.

Symptoms of late-stage HIV infection may include:

 blurred vision

 diarrhoea, which is usually persistent or chronic

 dry cough

 fever of above 37C (100F) lasting for weeks

 night sweats

 permanent tiredness

 shortness of breath

 swollen glands lasting for weeks

 weight loss

 white spots on the tongue or mouth

During late-stage HIV infection, the risk of developing a life-threatening illness is much greater. Examples include:

 esophagitis (an inflammation of the lining of the lower end of the esophagus)

 infections to the nervous system (acute aseptic meningitis,

subacute encephalitis, peripheral neuropathy)

 pneumonia Some cancers, such as Kaposi's sarcoma, invasive cervical cancer, lung cancer, rectal carcinomas, hepatocellular carcinomas, head and neck cancers, cancers of the immune system known as lymphomas

 Toxoplasmosis (a disease caused by a parasite that infects the brain. It can also cause disease in the eyes and lungs)

 tuberculosis

 Life-threatening illnesses may be controlled and treated

with proper HIV treatment

       Diagnosis of HIV/AIDS

A 2011 report issued by the CDC (Centres for Disease Control and Prevention), USA, found that about 1 in every 5 HIV-positive Americans is unaware of their HIV-status, and only 49% of those who are aware receive ongoing medical care and treatment.

Blood test

Diagnosis is made through a blood test that screens specifically for the virus.If the HIV virus has been found, the test result is "positive". The blood is retested several times before a positive result is given to the patient.For those whose tests came back positive, they will be asked to undergo some other tests to see how the infection has progressed, and also to decide when to start treatment.

If a person has been exposed to the virus, it is crucial that they get tested as soon as possible. The earlier HIV is detected, the more likely the treatment will be successful. Also, precautions can be taken to prevent the virus from spreading to other people.

ELISA Test?

An enzyme-linked immunosorbent assay, also called ELISA or EIA, is a test that detects and measures antibodies in your blood. This test can be used to determine if you have antibodies related to certain infectious conditions. Antibodies are proteins that your body produces in response to harmful substances called antigens. An ELISA test may be used to diagnose:

 HIV, which causes AIDS

 Lyme disease

 pernicious anaemia

 Rocky Mountain spotted fever (RMSF)

 rotavirus

squamous cell carcinoma

 syphilis

 toxoplasmosis

 varicella-zoster virus, which causes chicken pox and shingles ELISA is often used as a screening tool before more in-depth tests are ordered. A doctor may suggest this test if you’re having signs or symptoms of the conditions above or your doctor wants to rule out any of these conditions.

How the Test Is Performed

The ELISA test is simple and straightforward. You’ll probably need to sign a consent form, and your doctor should explain the reason for doing the test.

The ELISA test involves taking a sample of your blood. First, a healthcare provider will cleanse your arm with an antiseptic. Then, a tourniquet, or band, will be applied around your arm to create pressure and cause your veins to swell with blood. Next, a needle will be placed in one of your veins to draw a small sample of blood. When enough blood has been collected, the needle will be removed and a small bandage will be placed on your arm where the needle was. You'll be asked to elevate your arm and place pressure on it with gauze to reduce blood flow.

This procedure should be relatively painless, but your arm may throb a little after the procedure.

The blood sample will be sent to a laboratory for analysis. In the lab, a technician adds the sample to a Petri dish containing the specific antigen related to the condition for which you are being tested. If your blood contains antibodies to the antigen, the two will bind together. The technician will check this by adding an enzyme to the Petri dish and observing how your blood and the antigen react. You may have the condition if the contents of the dish change colour. How much change the enzyme causes allows the technician to. Determine the presence and amount of antibody.

Ultra-sensitive HIV sensor

Scientists from Imperial College London reported in Nature Nanotechnology (October 2012 issue) that they have developed an extremely sensitive sensor that detects viral infections, including HIV. They say the sensor is ten times more sensitive at detecting an HIV biomarker that anything else on the market today; it is also extremely cheap. The doctor can see the results by looking at the colour change in a liquid solution.

Recent developments on HIV

Genetic changes identified that make HIV elusive to drugs

Scientists have identified two locations where slight differences in genetic code can change the way human immunodeficiency virus infects cells - a change associated with worsening symptoms and resistance to antiretroviral drugs.

Scripps team lays 'spectacular' foundations for HIV vaccine

"A leap forward" has been made to develop a vaccine against HIV, claim the authors of two new studies that are

published concurrently in the journals Cell and Science.

Latent HIV cells only 'wake up' once a week after antiretroviral therapy, study finds

A new study published in PLOS Pathogens provides new insight into how often HIV cells "wake up" among individuals undergoing antiretroviral therapy for the virus, bringing researchers one step closer to getting patients off the treatment for good and into remission.

Vaginal ring reduces risk of HIV by up to 61%

A vaginal ring can safely provide some protection against HIV infection by continuously releasing an experimental antiretroviral drug, say findings published in the New England Journal of Medicine.

Treatments for HIV/AIDS

Earlier HIV antiretroviral treatment is crucial - it improves quality of life, extends life expectancy and reduces the risk of transmission, according to the World Health Organization's guidelines issued in June 2013 .When an HIV-positive adult's CD4 cell count is 500 cells/mm3 or lower they should start treatment immediately.

According to Margaret Chan, WHO Director-General "These guidelines represent another leap ahead in a trend of ever-higher goals and evergreater achievements. With nearly 10 million people now on antiretroviral therapy, we see that such prospects - unthinkable just a few years ago - can

now fuel the momentum needed to push the HIV epidemic into irreversible decline."

Currently, there is no vaccine or cure for HIV/AIDS. But treatments have evolved which are much more efficacious - they can improve patients' general health and quality of life considerably

Emergency HIV pills

If an individual believes they have been exposed to the virus within the last 72 hours (three days), anti-HIV medication, called PEP (post-exposure prophylaxis) may stop infection. The treatment should be taken as soon as possible after contact with the virus.

PEP is a very demanding treatment lasting four weeks. It is also associated with unpleasant side effects (diarrhea, malaise, nausea, weakness and fatigue).

After a positive HIV diagnosis, regular blood tests are necessary to monitor the progress of the virus before starting treatment. The therapy is designed to reduce the level of HIV in the blood.

Antiretroviral drugs

HIV is treated with antiretroviral (ARVs). The treatment fights the HIV infection and slows down the spread of the virus in the body. Generally, patients take a combination of medications called HAART (highly active antiretroviral therapy).

The combination of drugs is adapted to each individual. HIV treatment is usually permanent and lifelong. HIV treatment is based on routine dosage. Pills must be taken on a regular schedule, every time. Common side effects include nausea, fatigue, diarrhea, skin rashes, moodiness, alterations to the

adipose (fat) tissue, birth defects. 

Antifungal cream Ciclopirox may help eradicate HIV - researchers at the Rutgers New Jersey Medical School reported in the journal PLoS ONE that Ciclopirox, a widely used antifungal cream, as well as Deferiprone, a medication used to remove excess iron from the body, eradicate HIV in

cultured cells. They added that when treatment stops, the virus does not return.

Complementary or alternative medicine

Although widely used, alternative/complementary medications, such has herbal ones, have not been proven to be effective or ineffective. According to some limited studies, mineral or vitamin supplements may provide some

benefits. Patients are urged to discuss these options with their doctors.

New clue towards an AIDS vaccine

The outer shell of HIV has a vulnerable spot, which enabled two HIV-positive people to make antibodies powerful enough to kill off the majority of HIV types known globally.

A glycan, a form of sugar,in a specific part on the protein coat that covers HIV (location known as"position 332") is a

vulnerable spot that allows the body to mount an effective attack using broadly neutralizing antibodies. 

The scientists, from the University of the Witwatersrand, Johannesburg, South Africa, said their discovery offers new clues about stimulating the body to produce "broadly neutralizing antibodies". They believe these antibodies are key for making an AIDS vaccine, because they destroy most

of the HIV types around the world. They published their findings in Nature Medicine (21 October, 2012 issue).

April 2013 - A step closer to an HIV vaccine

A team led by scientists from the Duke Human Vaccine Institute, and the NIH Vaccine Research Center say they have charted a new route that may help develop a vaccine which boosts an individual's ability to destroy HIV. They

published their findings in the journal Nature (April 2013 issue).

Barton F. Haynes, M.D., John Mascola, M.D. and team studied an HIV infected patient whose immune system attacked the virus, allowing them to describe the co-evolution of the antibodies.

HIV has proven especially difficult in inducing an antibody response, making it very hard to develop a vaccine. As soon as HIV antibodies are produced, the virus changes

rapidly to avoid them.

The team used a new form of technology that can detect infection early on and track the body's immune system.

Recent developments in HIV treatment

New drugs reawaken latent HIV to eradicate virus

A new study suggests a class of drugs already being tested in clinical trials for the treatment of cancer may also hold the key to complete eradication of HIV.

Alcoholism drug could help cure HIV, study finds

A drug used to treat alcoholism - called disulfiram - could bring us closer to a cure for HIV, according to the results of a new study led by researchers from the University of Melbourne in Australia.

HIV vaccine possibility following study of 'antibodies with loops'

A new study suggests it may be possible to induce a rapid anti-HIV immune response in unexposed people by developing a vaccine that triggers antibodies containing loop-like structures.

HIV antibody therapy looks promising

A new study of the effects of a new antibody treatment suggests it may offer a long-term solution for the control of HIV.

HIV Prevention

To prevent being infected with HIV, healthcare professionals advice precautions related to:

Unprotected sex

Having sex without a condom can put a person at risk of being infected with HIV and other sexually transmitted

infections (STIs). HIV can be spread by having unprotected sex (vaginal, oral and anal sex). It can also be caught from sharing sex toys with someone infected with HIV.

Drug abuse and needle sharing

Intravenous drug use is an important factor in HIV transmission in developed countries. Sharing needles can expose users to HIV and other viruses, such as hepatitis C.

Strategies such as needle-exchange programs are used to reduce the infections caused by drug abuse.

Body fluid exposure

Exposure to HIV can be controlled by employing precautions to reduce the risk of exposure to contaminated blood. At all times, health care workers should use barriers (gloves, masks, protective eye wear, shields, and gowns).

Frequent and thorough washing of the skin immediately after being contaminated with blood or other bodily fluids can reduce the chance of infection.

Pregnancy

Anti-HIV medicines can harm the unborn child. But an effective treatment plan can prevent HIV transmission from mother to baby. Precautions have to be taken to protect the baby´s health. Delivery through caesarean section may be

necessary. Breastfeeding may have to give way to bottle-feeding if the mother is infected.

A study by scientists from Columbia University, New York, found that breastfeeding for 6+ months with antiretroviral therapy could help reduce mother-to-child HIV transmission as well as improve chances of infant's survival.

   Education

Health education is an important factor in reducing risky behavior

Managing HIV

Adherence. HIV treatment is effective if the patient is committed and constant in taking the medication on time. Missing even a few doses will jeopardize the treatment. A daily methodical routine has to be programmed to fit the treatment plan around the patient's lifestyle and schedule.

"Adherence" is sometimes known as "compliance".

General Health. It is crucial for patients to take medication correctly and take steps to avoid illness. Patients should seek to improve their general health and reduce the risk of falling ill by practicing regular exercise, healthy eating, and not smoking.

Additional precautions. HIV-infected people should be extra cautious to prevent exposure to infection. They should be careful around animals, avoid coming into contact with cat litter, animal feces. Meticulous and regular washing of hands is recommended.

Long-term condition. HIV is a lasting condition, and therefore patients have to be in regular contact with their healthcare team. Treatment plan is reviewed regularly.

Psychological. Common misconceptions about AIDS/ HIV are diminishing.However, the stigma of the condition persists in many parts of the world. People infected with the virus may feel excluded, rejected, discriminated and isolated.

Being diagnosed with HIV can be very distressing, and feelings of anxiety or depression are common. If you feel anxious or have symptoms of depression, seek medical help immediately.

CONCLUSION

After studying the cause and effects of ‘AIDS’ from different views, we conclude that it is a pandemic disease. It is mainly spreading sexually and person of the age group of 25-45 years are the most affected group. There are some methods like ‘Antiviral Therapy’ and Immuno Simulative therapy

which bring some hope that even then no specific treatment has been found so for and morality form is virtually 100%. So only prevention in the test medicine care.

HYPOTHESIS

AIDS is non curable due to its nature of pathogen. It also damage immune system of the body. Therefore any medicine (Antiviral) drugs are not effective against HIV virus. Ignorance and lack of knowledge about this

disease is the root cause of wide spread of this disease Malaria is one of the major diseases which is caused by Protozoan. Protozoan causes many diseases in human beings. Malaria has been for thousands of years a very

serious disease of the tropical and temperate regions. Prevalence of malaria continues to be one of the major health problems of developing countries. It was almost eliminated a few years back with the efforts of WHO and our National Malaria Eradication Programme (NMEP), but unfortunately it has appeared again. Plasmodium is a genus of Protozoa belonging to subphylum Sporozoa, class Telosporidea, includes causative agent of malaria in man

and lower animals. Members of the genus plasmodium are collectively known as Malaria parasite, because they cause a horrible disease called malaria.

Bibliography

Parts of this project have been referred from foreign sources

and have been included in this project after editing.

The reference of sources is as follows:-

Books:-

a) Biology NCERT Book class 12th

b) National Geographic Magazine

Internet Sources:-

a) www.google.com

b) www.icbse.com

c) Bioflora.com

d) Nationalgeographic.com

Journal

a. Biology Today

b. Science Reporter

                              YOU CAN WATCH OUR VIDEO

                           you can see our pdf also

download ⟶ click here