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1.AIDS is caused by the human immunodeficiency virus.
2.It is a very dangerous disease which can bring a lot of problems.
3.The number of people who have this disease is increasing all the time.
4.It is a virus that spreads by blood.
5.People have to be aware about the disease,and to take care.
6.A blood test can show if a person has aids.
7.There is no treatment from this disease.