艾滋病英语作文:ABC OF AIDS1200字
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.
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预防艾滋病作文:远离艾滋病800字
12月1日是世界艾滋病日。艾滋病是联合国确定的当今三大国际公害之一,目前,全世界有四千多万艾滋病毒感染者,每年新感染人数高达五百多万,死亡三百多万。中国艾滋病的流行趋势处于世界第14位,在亚洲排名第二位。艾滋病病毒感染者每年以40%的速度在递增。专家预测,如果...
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艾滋病毒,我想对你说作文550字
Holle!艾滋病病毒,最近你又在哪里兴风作浪了?听说人类就要消灭你了,我可真替你担心啊!你的老家在南非吧!在那里,你窗户里吹喇叭——名(鸣)声在外,只要那里的人一听到艾滋病三个字,就立即吓得面如土色。你令人望而生畏,对被你施了毒掌的人敬而远之。你战果累累,在...
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预防艾滋病作文:关切“残破的花朵”500字
上帝是公正的,在向别人封闭一扇门的同时,还会给他们从头打开常人所无法感触到、触摸到的另一扇门。庆幸染上艾滋病的人们,固然落空了像常人一样的糊口生涯,但他们却获得了一份最宝贵的礼品:救助。残破的花朵请你们不要抽泣,不要悲伤,仰入手下手,望着天空与我们手牵手的...
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艾滋病作文:给艾滋病患者的一封信750字
亲爱的艾滋病患者们:你们好!生命如同一朵娇嫩的花朵,它一旦绽放比牡丹更国色天香,比荷花更高贵纯洁,比秋菊更有风韵,比冬梅更具傲骨。但是正因为它的娇嫩,也许一个不经意,也会使它凋谢、枯萎。我虽然从来没有机会与你们交往过,但是你们的命运却一直牵动着我的心。当我看...
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