最新艾滋病介绍英语课件PPT文档.ppt

What is AIDS?AIDS stands for:Acquired Immune Deficiency SyndromeAIDS is a medical condition.A person is diagnosed with AIDS when their immune system is too weak to fight off infections.Since AIDS was first identified in the early 1980s,an unprecedented number of people have been affected by the global AIDS epidemic.Today,there are an estimated 33.4 million people living with HIV and AIDS and each year around two million people die from AIDS related illnesses.,What causes AIDS?AIDS is caused by HIV.HIV is a virus that gradually attacks immune system cells.As HIV progressively damages these cells,the body becomes more vulnerable to infections,which it will have difficulty in fighting off.It is at the point of very advanced HIV infection that a person is said to have AIDS.It can be years before HIV has damaged the immune system enough for AIDS to develop.,What are the symptoms of AIDS?A person is diagnosed with AIDS when they have developed an AIDS related condition or symptom,called an opportunistic infection,or an AIDS related cancer.The infections are called opportunistic because they take advantage of the opportunity offered by a weakened immune system.It is possible for someone to be diagnosed with AIDS even if they have not developed an opportunistic infection.AIDS can be diagnosed when the number of immune system cells(CD4 cells)in the blood of an HIV positive person drops below a certain level.,Is there a cure for AIDS?Worryingly,many people think there is a cure for AIDS-which makes them feel safer,and perhaps take risks that they otherwise wouldnt.However,there is still no cure for AIDS.The only way to stay safe is to be aware of how HIV is transmitted and how to prevent HIV infection,How many people have died from AIDS?Since the first cases of AIDS were identified in 1981,more than 25 million people have died from AIDS.An estimated two million people died as a result of AIDS in 2008 alone.Although there is no cure for AIDS,HIV infection can be prevented,and those living with HIV can take antiretroviral drugs to delay the onset of AIDS.However,in many countries across the world access to prevention and treatment services is limited.Global leaders have pledged to work towards universal access to HIV prevention and care,so that millions of deaths can be averted.,Caring for a person with AIDSIn the later stages of AIDS,a person will need palliative care and emotional support.In many parts of the world,friends,family and AIDS organisations provide home based care.This is particularly the case in countries with high HIV prevalence and overstretched healthcare systems.End of life care becomes necessary when a person has reached the very final stages of AIDS.At this stage,preparing for death and open discussion about whether a person is going to die often helps in addressing concerns and ensuring final wishes are followed.,The global AIDS epidemicAround 2.7 million people became infected with HIV in 2008.Sub-Saharan Africa has been hardest hit by the epidemic;in 2008 over two-thirds of AIDS deaths were in this region.Parc de lespoir-AIDS Memorial Park in Montreal,Canada The epidemic has had a devastating impact on societies,economies and infrastructures.In countries most severely affected,life expectancy has been reduced by as much as 20 years.Young adults in their productive years are the most at-risk population,so many countries have faced a slow-down in economic growth and an increase in household poverty.In Asia,HIV and AIDS causes a greater loss of productivity than any other disease.An adults most productive years are also their most reproductive and so many of the age group who have died from AIDS have left children behind.In sub-Saharan Africa the AIDS epidemic has orphaned nearly 12 million children.,In recent years,the response to the epidemic has been intensified;in the past ten years in low-and middle-income countries there has been a 6-fold increase in spending for HIV and AIDS.The number of people on antiretroviral treatment has increased,the annual number of AIDS deaths has declined,and the global percentage of people infected with HIV has stabilised.However,recent achievements should not lead to complacent attitudes.In all parts of the world,people living with HIV still face AIDS related stigma and discrimination,and many people still cannot access sufficient HIV treatment and care.In America and some countries of Western and Central and Eastern Europe,infection rates are rising,indicating that HIV prevention is just as important now as it ever has been.Prevention efforts that have proved to be effective need to be scaled-up and treatment targets reached.Commitments from national governments right down to the community level need to be intensified and subsequently met,so that one day the world might see an end to the global AIDS epidemic.,END,