艾滋病英语作文:ABC OF AIDS_1200字

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艾滋病英语作文:ABC OF AIDS_1200字

AIDS is the abbreviation1) of ACQUIRED IMMUNE

DEFICIENCY SYNDROME.It is a xxplicated 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 xxplex,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.