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艾滋病英语作文：Fighting against AIDS

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篇1：英语作文艾滋病

英语作文艾滋病

（一）英语作文艾滋病：预防艾滋病

More media coverage is being paid to the HIV/AIDS situation in China, especially after a gathering of leading officials, scientists, medical workers and activists in the field occurred in Beijing on November 10. By official estimates, China has 840,000 people carrying HIV, the virus that causes AIDS, and about 80,000 AIDS patients. Despite the fairly large groups of HIV carriers and AIDS patients, the epidemic is mostly confined to high-risk groups, such as drug users, prostitutes and users of blood products.

And it has yet to spread widely in the rest of the nation. The Chinese Government is well aware of such perspectives, and the central and local governments have allocated 6.8 billion yuan (US$822 billion) to establish and improve disease prevention and control mechanisms in provinces. Each year a special fund of more than 200 million yuan (US$24 million) is channeled into HIV/AIDS prevention, care and treatment. Since April, free medicine to poor AIDS patients has been delivered in regions hit hardest by the virus. Just as the impacts of AIDS reaches social and economic fields of society, effective prevention also requires united efforts from virtually all sectors. Key factors needed include public education, affordable drugs, medical training for healthcare workers in hospitals and the public health system, monitoring and evaluation, care for orphans.

measures to stop mother-to-child transmission, a comprehensive care framework and research into vaccines and a cure.

None of these things can be achieved with the single hand of any institution — not health officials, not medical workers or the government. The fight against HIV/AIDS requires the participation of as many parties as possible. As former US President Bill Clinton said as a co-chair of the advisory board of International AIDS Trust, the AIDS problem is “manageable and preventable” though we must wage it on all fronts with tenuous determination, utmost patience and tactful skills.

（二）英语作文艾滋病：艾滋病的传播

aids, stands for acquired immune deficiency syndrome, is a deadly disease. it malfunctions the human body's defence system, making the infected person extremely vulnerable to diseases, and eventually cause death.

aids can be spread in many ways, but the main medium is through having unprotected intercourse with an infected person. apart from that, aids can spread from mother to new born baby, or sharing of needles, shaving blades, or any means of blood contact.

once infected, it may take years for the person to notice, and in these years, the infected person may not know and can infect many more, who in turn go and infect others, just like an exponential growth.

篇2：艾滋病英语作文

艾滋病英语作文

艾滋病英语作文：ABC OF AIDS

aids is the abbreviation1) of acquired immune deficiency syndrome.it is a complicated illness that may involve several phases.it is caused by a virus that can be passed from person to person.aids impairs the human body's immune system，the system responsible for keeping off disease，and leaves the victim easily affected by various infection.

the virus enters the bloodstream and destroys certain white blood cells，called t lymphocytes2)，which play a key role in the functioning of the immune system.the virus can also infect other types of cells in the body，including the immune-system cells knows as macrophages3).unlike t lymphocytes，however，macrophages are not killed by the virus.

most people recently infected by the aids virus look and feel healthy.in some people the virus may remain inactive，and these people act as carriers，remaining apparently healthy but still able to infect others.after a few years，some people may develop aids-related complex，or arc.its symptoms may include fever，fatigue4)，weight loss，skin rashes，a fungal5) infection of the mouth known as thrush，lack of resistance to infection，and swollen lymph nodes.

aids is spread by direct infection of the bloodstream with body fluids that contain the aids virus，particular blood and semen from an hiv-infected person.the virus is usually spread through various forms of sexual intercourse，the transfusion of virus-infected blood，or the sharing of hiv-contaminated intravenous6) need les.

艾滋病英语作文：Fighting against AIDS

the world aids day is confronted with a gloomy picture that shows the deadly virus is not abating, but spreading even faster.

deaths and new cases of infection have reached unprecedented highs in xx and are likely to rise still further, according to a report jointly released last week by the united nations and the world health organization (who).

this year, some 5 million people have been infected, bringing the total number of people living with hiv/aids to 40 million worldwide. at the same time, some 3 million died of the disease.

the epidemic continues to expand, far from reaching a plateau, health experts warn.

while sub-saharan africa remains the worst affected region, the asia-pacific area - home to 60 per cent of the world's population - is shaping up as the new battleground in the fight against the disease, the report indicates.

unless effective action is taken, some countries in the region may face major epidemics.

china may become one of them should the country not be responsive to the crisis.

latest statistics put the number of people with hiv/aids in china at 840,000, including 80,000 aids patients.

worse, the momentum for further spreading of the numbers is continuing, and may well be accelerating.

though the current prevalence in the country is still low, the increased infection rate plus the vast population in the nation points to a possible catastrophic explosion in cases in the absence of stepped up efforts to fight the disease.

chinese aids experts have raised the alarm that people living with hiv/aids may soon soar to 10 million by xx without efficient prevention methods. while the number could be trimmed down to 3 million if prevention methods work, action, and only action, can make the difference.

due to ignorance and lack of commitment among some, the disease has already caused great human suffering, economic losses and social devastation. yet waiting ahead could be losses multiplied exponentially if the virus is not kept at bay.

the situation is grave, and the challenge is tough. china cannot afford a delay in making a serious commitment to the fight and taking action.

initiatives have indeed been rolled out, and they must be followed.

executive health vice-minister gao qiang recently pledged that the government will provide free medical treatment to hiv carriers and aids patients in rural areas or those among the urban poor. he promised to ensure legal rights and interests of hiv/aids victims.

he said that local governments will be held directly accountable if loopholes in their work lead to serious epidemics in their regions. he also called for intensified government intervention into behaviour found to be at risk.

this is viewed as the strongest commitment to date by the government in tackling the epidemic.

the plan, if carried out well, will surely be a great push forward in fighting hiv/aids. it should herald more and stronger resolution from the government.

lack of information on the virus has proven to be a major element that fuels the spread of hiv/aids. aggressive campaigns should be undertaken to promote knowledge about hiv/aids to even people in the most remote areas, especially among illiterates and those practising unsafe sexual behaviour.

more important, efforts from all walks of life are needed to create a friendly atmosphere for people living with hiv/aids.

prejudice, rejection, hurt and ostracism are some of the most painful parts of hiv infection which even a miracle drug can not overcome, a who official explained.

stigma and discrimination constitute one of the greatest barriers to preventing further infections, providing adequate care, support and treatment and alleviating the epidemic's impact.

the same sort of national commitment and resources used to fight sars (severe acute respiratory syndrome), if used toward fighting hiv/aids, should help us find an effective way to combat this disease, too.

艾滋病英语作文：Fight against HIV

first observed in 1988, world aids day this year has a worldwide theme of “universal access and human rights: i am”, reminding people that hiv has not gone away, and that there are many things still to be done for everyone. according to the latest report on aids by unaids and world health organization, there are now 33.4 million people living with hiv, including 2.1 million children.

dr. anthony fauci, director of the national institute of allergy and infectious diseases at the national institutes of health of the united states, says the us government has injected huge investment in hiv research, which has yielded progress over the years.

dr. fauci says while treatment is crucial, prevention should be prioritized in the first place to reduce infection.

“finally, in prevention, there are a number of proven prevention strategies that we know work. everything from counseling and media campaigns to distribution of condoms, needle exchange programs, circumcision, prevention of mother-to-child transmission. again, that's the good news. the sobering news is that globally, less than 20 percent of people who would benefit from prevention modalities actually have access to them. ”

michele moloney-kitts, assistant united states global aids coordinator in the office of the u.s. global aids coordinator, says in the global context, the us is the largest donor by far to the global fight against aids.

篇3：艾滋病的英语作文

Many people are afraid of people with AIDS since they think there is a risk of being infected. People with AIDS are normally lonely since many people are not willing to communicate with them.

Actually this is a kind of misunderstanding since it is safe to talk to or shake hands with people with AIDS. People with AIDS need more care and support to help them overcome the difficulties. Therefore if we all set up the correct understanding and try to help the people with AIDS, our society is going to be more caring and beautiful.

篇4：艾滋病的英语作文

World AIDS Day, observed December 1 eachyear, is dedicated to raising awareness of the AIDSpandemic caused by the spread of HIV infection. Itis common to hold memorials to honor persons whohave died from HIV/AIDS on this day. Governmentand health officials also observe the event, oftenwith speeches or forums on the AIDS topics. Since 1995, the President of the United Stateshas made an official proclamation on World AIDS Day. Governments of other nations havefollowed suit and issued similar announcements。

AIDS has killed more than 25 million people between 1981 and , and an estimated 33.2million people worldwide live with HIV as of 2007, making it one of the most destructiveepidemics in recorded history. Despite recent, improved access to antiretroviral treatment andcare in many regions of the world, the AIDS epidemic claimed an estimated 2 million lives in2007, of which about 270,000 were children。

Started in 1988, World AIDS Day is not just about raising money, but also about raisingawareness, education and fighting prejudice. World AIDS Day is also important in remindingpeople that HIV has not gone away, and that there are many things still to be done.

篇5：艾滋病的英语作文

world aids day is observed every year on december 1st.

do you know aids? aids is a terrible disease. right now, it is a deadly disease and so far, it cannot be cured.there is no pill, no vaccine, no surgery to make you better. hiv and aids has decimated the world we live in, and things are only going to get worse.so it is called “super killer”.

at last estimate by unaids, 40 million people have been infected with aids around the world.every minute, five people get infected with aids! it is terrible, isn't?

do you know about this red ribbon?it is called the “aids ribbon”.on this day people wear red ribbons to show their support and to raise awareness. this started as a grassroots effort and there is still not one main manufacturer for the ribbons. the red ribbon united people to fight against aids.

you won't get aids if you:

work, eat and drink together with aids patients;

shake hands with them or hug them;

talk face to face with them;

use the same toilet as them;

swim with them.

what do you think about aids? show us your ideas.

篇6：艾滋病的英语作文

last sunday all of our class with our class together with our head teacher went to a hospital to see an aids sufferer. we brought a bound of flowers and a basket of fru

it m send to the patient. the female patient was very glad to see us. she told us that most of the people avoided seeing her since she was told that she carried the hiv virus. the doctor told us that the hiv virus wouldn't be infected through daily communication. people in china are often ignorant of the disease and look down upon those who suffer from aids. it is wrong.

during our stay there, we talked with the woman bout her family and our school life. some students sent her books and their favorite cds. she was greatly touched and said in tears that she would be optimistic and confident of overcming the disease. our teacher hugged her good bye and promised we would come to see her often.

on our way back to school, i was thinking that if everyone of us loves each other more and gives a hand when others are in trouble, the world will become more beautiful.

篇7：艾滋病英语作文：About AIDS

艾滋病英语作文：About AIDS_1500字

The World Health Organization says as many as 10 million persons worldwide may have the virus(病毒) that causes AIDS.Experts believe about 350 thousand persons have the disease.And one million more may get it in the next five years.In the United States,about 50,000 persons have died with AIDS.The country’s top medical official says more than 90 percent of all Americans who had the AIDS virus five years ago are dead.?

There is no cure for AIDS and no vaccine(疫苗) medicine to prevent it.However,researchers know much more about AIDS than they did just a few years ago.We now know that AIDS is caused by a virus.The virus invades healthy cells including white blood cells that are part of our defense system against disease.It takes control of the healthy cell’s genetic(遗传的) material and forces the cell to make a copy of the virus. The cell thendies.And the viral particles move on to invade and kill more healthy cells.The AIDS virus is carried in a person’s body fluids.The virus can be passed sexually or by sharing instruments used to take intravenous(静脉内的) drugs.It also can be passed in blood products or from a pregnant woman with AIDS to her developing baby.?

Many stories about the spread of AIDS are false.You cannot get AIDS by working or attending school with someone who has the disease.You can not get it by touching,drinking glasses or other objects used by such persons.Experts say no one has gotten AIDS by living with,caring for or touching an AIDS patient.?

There are several warning signs of an AIDS infection.They include always feeling tired,unexplained weight loss and uncontrolled expulsion of body wastes(大小便失禁). Other warnings are the appearance of white areas on the mouth ,dark red areas of skin that do not disappear and a higher than normal body temperature.

篇8：艾滋病英语作文：against aids

艾滋病英语作文：against aids

more media coverage is being paid to the hiv/aids situation in china, especially after a gathering of leading officials, scientists, medical workers and activists in the field occurred in beijing on november 10.

by official estimates, china has 840,000 people carrying hiv, the virus that causes aids, and about 80,000 aids patients.

despite the fairly large groups of hiv carriers and aids patients, the epidemic is mostly confined to high-risk groups, such as drug users, prostitutes and users of blood products. and it has yet to spread widely in the rest of the nation.

the chinese government is well aware of such perspectives, and the central and local governments have allocated 6.8 billion yuan (us$822 billion) to establish and improve disease prevention and control mechanisms in provinces. each year a special fund of more than 200 million yuan (us$24 million) is channeled into hiv/aids prevention, care and treatment.

since april, free medicine to poor aids patients has been delivered in regions hit hardest by the virus.

just as the impacts of aids reaches social and economic fields of society, effective prevention also requires united efforts from virtually all sectors.

key factors needed include public education, affordable drugs, medical training for healthcare workers in hospitals and the public health system, monitoring and evaluation, care for orphans, measures to stop mother-to-child transmission, a comprehensive care framework and research into vaccines and a cure.

none of these things can be achieved with the single hand of any institution — not health officials, not medical workers or the government.

the fight against hiv/aids requires the participation of as many parties as possible.

as former us president bill clinton said as a co-chair of the advisory board of international aids trust, the aids problem is “manageable and preventable” though we must wage it on all fronts with tenuous determination, utmost patience and tactful skills.

篇9：艾滋病英语作文：ABC OF AIDS

aids is the abbreviation1) of acquired immune deficiency syndrome．it is a complicated illness that may involve several phases．it is caused by a virus that can be passed from person to person．aids impairs the human body's immune system，the system responsible for keeping off disease，and leaves the victim easily affected by various infection．

the virus enters the bloodstream and destroys certain white blood cells，called t lymphocytes2)，which play a key role in the functioning of the immune system．the virus can also infect other types of cells in the body，including the immune－system cells knows as macrophages3)．unlike t lymphocytes，however，macrophages are not killed by the virus．

most people recently infected by the aids virus look and feel healthy．in some people the virus may remain inactive，and these people act as carriers，remaining apparently healthy but still able to infect others．after a few years，some people may develop aids－related complex，or arc．its symptoms may include fever，fatigue4)，weight loss，skin rashes，a fungal5) infection of the mouth known as thrush，lack of resistance to infection，and swollen lymph nodes．

aids is spread by direct infection of the bloodstream with body fluids that contain the aids virus，particular blood and semen from an hiv－infected person．the virus is usually spread through various forms of sexual intercourse，the transfusion of virus－infected blood，or the sharing of hiv－contaminated intravenous6) need les．

篇10：艾滋病英语作文:艾滋病的传播

艾滋病英语作文:艾滋病的传播

AIDS, stands for Acquired Immune Deficiency Syndrome, is a deadly disease. It malfunctions the human body's defence system, making the infected person extremely vulnerable to diseases, and eventually cause death.

AIDS can be spread in many ways, but the main medium is through having unprotected intercourse with an infected person. Apart from that, AIDS can spread from mother to new born baby, or sharing of needles, shaving blades, or any means of blood contact.

Once infected, it may take years for the person to notice, and in these years, the infected person may not know and can infect many more, who in turn go and infect others, just like an exponential growth.

篇11：艾滋病英语作文：about aids

艾滋病英语作文：about aids

the world health organization says as many as 10 million persons worldwide may have the virus(病毒) that causes aids.experts believe about 350 thousand persons have the disease.and one million more may get it in the next five years.in the united states,about 50,000 persons have died with aids.the country’s top medical official says more than 90 percent of all americans who had the aids virus five years ago are dead.?

there is no cure for aids and no vaccine(疫苗) medicine to prevent it.however,researchers know much more about aids than they did just a few years ago.we now know that aids is caused by a virus.the virus invades healthy cells including white blood cells that are part of our defense system against disease.it takes control of the healthy cell’s genetic(遗传的) material and forces the cell to make a copy of the virus. the cell thendies.and the viral particles move on to invade and kill more healthy cells.the aids virus is carried in a person’s body fluids.the virus can be passed sexually or by sharing instruments used to take intravenous(静脉内的) drugs.it also can be passed in blood products or from a pregnant woman with aids to her developing baby.?

many stories about the spread of aids are false.you cannot get aids by working or attending school with someone who has the disease.you can not get it by touching,drinking glasses or other objects used by such persons.experts say no one has gotten aids by living with,caring for or touching an aids patient.?

there are several warning signs of an aids infection.they include always feeling tired,unexplained weight loss and uncontrolled expulsion of body wastes(大小便失禁). other warnings are the appearance of white areas on the mouth ,dark red areas of skin that do not disappear and a higher than normal body temperature.

篇12：世界艾滋病日英语作文

世界艾滋病日英语作文

Many people are afraid of people with AIDS since they think there is a risk of being infected. People with AIDS are normally lonely since many people are not willing to communicate with them.

许多人害怕艾滋病患者,因为他们认为有被感染的风险。艾滋病患者通常是孤独的因为许多人不愿意和他们交流。

实际上这是一种误解,因为它是安全的和或与艾滋病患者握手。艾滋病患者需要更多的关心和支持,帮助他们克服困难。因此如果我们都设置正确的.理解和帮助艾滋病患者,我们的社会将是更多的关怀和美丽。

篇13：与艾滋病作战的英语作文

与艾滋病作战的英语作文

The World AIDS Day is confronted with a gloomy picture that shows the deadly virus is not abating, but spreading even faster.

Deaths and new cases of infection have reached unprecedented highs in and are likely to rise still further, according to a report jointly released last week by the United Nations and the World Health Organization (WHO).

This year, some 5 million people have been infected, bringing the total number of people living with HIV/AIDS to 40 million worldwide. At the same time, some 3 million died of the disease.

The epidemic continues to expand, far from reaching a plateau, health experts warn.

While Sub-Saharan Africa remains the worst affected region, the Asia-Pacific area - home to 60 per cent of the world's population - is shaping up as the new battleground in the fight against the disease, the report indicates.

Unless effective action is taken, some countries in the region may face major epidemics.China may become one of them should the country not be responsive to the crisis.

Latest statistics put the number of people with HIV/AIDS in China at 840,000, including 80,000 AIDS patients.

Worse, the momentum for further spreading of the numbers is continuing, and may well be accelerating.

Though the current prevalence in the country is still low, the increased infection rate plus the vast population in the nation points to a possible catastrophic explosion in cases in the absence of stepped up efforts to fight the disease.

Chinese AIDS experts have raised the alarm that people living with HIV/AIDS may soon soar to 10 million by without efficient prevention methods. While the number could be trimmed down to 3 million if prevention methods work, action, and only action, can make the difference.

Due to ignorance and lack of commitment among some, the disease has already caused great human suffering, economic losses and social devastation. Yet waiting ahead could be losses multiplied exponentially if the virus is not kept at bay.

The situation is grave, and the challenge is tough. China cannot afford a delay in making a serious commitment to the fight and taking action.

Initiatives have indeed been rolled out, and they must be followed.

Executive Health Vice-Minister Gao Qiang recently pledged that the government will provide free medical treatment to HIV carriers and AIDS patients in rural areas or those among the urban poor. He promised to ensure legal rights and interests of HIV/AIDS victims.

He said that local governments will be held directly accountable if loopholes in their work lead to serious epidemics in their regions. He also called for intensified government intervention into behaviour found to be at risk.

This is viewed as the strongest commitment to date by the government in tackling the epidemic.

The plan, if carried out well, will surely be a great push forward in fighting HIV/AIDS. It should herald more and stronger resolution from the government.

Lack of information on the virus has proven to be a major element that fuels the spread of HIV/AIDS. Aggressive campaigns should be undertaken to promote knowledge about HIV/AIDS to even people in the most remote areas, especially among illiterates and those practising unsafe sexual behaviour.

More important, efforts from all walks of life are needed to create a friendly atmosphere for people living with HIV/AIDS.

Prejudice, rejection, hurt and ostracism are some of the most painful parts of HIV infection which even a miracle drug can not overcome, a WHO official explained.

Stigma and discrimination constitute one of the greatest barriers to preventing further infections, providing adequate care, support and treatment and alleviating the epidemic's impact.

The same sort of national commitment and resources used to fight SARS (severe acute respiratory syndrome), if used toward fighting HIV/AIDS, should help us find an effective way to combat this disease, too.

篇14：艾滋病英语作文：fight against hiv

艾滋病英语作文：fight against hiv

dr. fauci says while treatment is crucial, prevention should be prioritized in the first place to reduce infection.

篇15：艾滋病英语作文：fight against aids

艾滋病英语作文：fight against aids

as i just witnessed during my recent visit here, china has made substantial progress in checking the spread of hiv but there is still a long way to go. from an infection unknown only 27 years ago, aids has become truly globalized. today, 33 million people live with hiv around the globe, and 25 million more have died.

these figures are sobering. however, it is important to note that we have entered a new phase in responding to aids - a phase that will ultimately be far more challenging than anything we have done so far.

now, for the first time, the aids response is producing real results.

in xx, fewer people got newly infected and the number of people dying of aids worldwide dropped, mainly thanks to better access to antiretroviral treatment.

in china, over 34,000 people are now taking hiv drugs, up from 5,000 in xx. but, we cannot slow down in our vigilance. whereas substantial progress has been achieved in this country, the number of people receiving hiv drugs is still less than half the number who require them. the epidemic continues to run ahead of the response: for every two people who start taking antiretroviral drugs, another five become newly infected with hiv.

many of those infections occur in situations that are illegal or outside of mainstream society. these give rise to apparent contradictions between respect for the law and protecting the health of people who inject drugs or are sex workers, between sexuality and morality, between needs of public security and public health, drug control and safe injections. indeed, to confront aids is to confront contradictions in society.

on closer investigation, however, most of these contradictions prove to be false contradictions. a scientifically-based aids response can solve them for the greater wellbeing of more people.

drug abuse, for example, is bad for an individual's health and for the community he or she lives in. hiv infections are particularly high among people who inject drugs. laws against drugs must be respected to protect society.

ultimately, though, the best way to protect both the wider population and drug users, and at the same time reconcile public security and public health concerns is to adopt the “harm reduction” approach. scientific evidence - including here in china- shows that providing drug users with substitution therapy and clean needles reduces hiv transmission and supports enforcement of laws against drug abuse.

similarly, working with sex workers and their clients to encourage condom use reduces hiv among these groups and in society as a whole. when such programs are backed up by poverty reduction efforts to reduce women's need to engage in prostitution, their impact is even greater.

it is issues such as these that make aids such a complex problem to deal with. complex problems require complex solutions. they also respond best to collective approaches. working with community groups, for example, can greatly increase the impact - and effectiveness - of aids strategies. in fact, given that most infections are happening in situations outside the mainstream norm, it is often very difficult for government alone to reach those who need to be reached.

it is encouraging, therefore, to note that there has recently been an increase in the number of community organizations working on aids in china. many of these groups are doing incredible work.

the joint assessment report published last year by the government together with the united nations system clearly highlights the need for greater involvement of community-based organization in the roll-out of programs to reach people with relevant services.

currently, there are no easy ways for community-based organizations to register. without registration, there can be no bank account and thus no easy way to receive funding. many of the groups i have seen are doing a great job - but their work is based on volunteerism. this is neither efficient nor sustainable.

china has solid policies in place and has made significant progress in the fight against aids. it is time now to use the tremendous array of resources at its disposal to build on that progress, and to tackle new, tough challenges like harm reduction and increasing civil society involvement,

as chairman mao said more than 60 years ago: “we must not become complacent over our success. we should check our complacency and constantly criticize our shortcomings, just as we should wash our faces and sweep the floor every day to remove the dirt and keep them clean.”

篇16：艾滋病英语作文：fight against AIDS

now, for the first time, the aids response is producing real results.

in , fewer people got newly infected and the number of people dying of aids worldwide dropped, mainly thanks to better access to antiretroviral treatment.

in china, over 34,000 people are now taking hiv drugs, up from 5,000 in . but, we cannot slow down in our vigilance. whereas substantial progress has been achieved in this country, the number of people receiving hiv drugs is still less than half the number who require them. the epidemic continues to run ahead of the response: for every two people who start taking antiretroviral drugs, another five become newly infected with hiv.

on closer investigation, however, most of these contradictions prove to be false contradictions. a scientifically-based aids response can solve them for the greater wellbeing of more people.

it is encouraging, therefore, to note that there has recently been an increase in the number of community organizations working on aids in china. many of these groups are doing incredible work.

篇17：艾滋病英语作文：艾滋病未解之谜

in the 20years since the first cases of aids were detected, scientists say they have learned more about this viral disease than any other.

yet peter piot, who directs the united nations aids program, and stefano vella of rome, president of the international aids society, and other experts say reviewing unanswered questions could prove useful as a measure of progress for aids and other diseases.

among the important broader scientific questions that remain：

why does aids predispose infected persons to certain types of cancer and infections？

a long-standing belief is that cancer cells constantly develop and are held in check by a healthy immune system. but aids has challenged that belief. people with aids are much more prone to certain cancers like non-hodgkins lymphomas and kaposi’s sarcoma , but not to breast, colon and lung, the most common cancers in the united states. this pattern suggests that an impaired immune system, at least the type that occurs in aids, does not allow common cancers to develop.

what route does hiv take after it enters the body to destroy the immune system？

when hiv is transmitted sexually, the virus must cross a tissue barrier to enter the body. how that happens is still unclear. the virus might invade directly or be carried by a series of different kinds of cells.

eventually hiv travels through lymph vessels to lymph nodes and the rest of the lymph system. but what is not known is how the virus proceeds to destroy the body’s cd-4cells that are needed to combat invading infectious agents.

how does hiv subvert the immune sys-tem？

although hiv kills the immune cells sent to kill the virus, there is widespread variation in the rate at which hiv infected people become ill with aids. so scientists ask：can the elements of the immune system responsible for that variability be identified？if so, can they be used to stop progression to aids in infected individuals and possibly prevent infection in the first place？

what is the most effective anti-hiv therapy？

in theory, early treatment should offer the best chance of preserving immune function. but the new drugs do not completely eliminate hiv from the body so the medicines, which can have dangerous side effects, will have to be taken for a lifetime and perhaps changed to combat resistance. the new policy is expected to recommend that treatment be deferred until there are signs the immune system is weakening.

is a vaccine possible？

there is little question that an effective vaccine is crucial to controlling the epidemic . yet only one has reached the stage of full testing, and there is wide controversy over the degree of protection it will provide. hiv strains that are transmitted in various areas of the world differ genetically. it is not known whether a vaccine derived from one type of hiv will confer protection against other types.

in the absence of a vaccine, how can hiv be stopped？

without more incisive , focused behavioral research, prevention messages alone will not stop the global epidemic.