What are the differences between hiv and aids?

CD4 count, illnesses: Hiv (human immunodeficiency virus) is the virus that causes aids (acquired immunodeficiency syndrome). The amount of cd4+ t cells decreases over the course of HIV infection. When the CD4 count falls below 200 cells/mm3, the patient is considered to have aids. Also, if the patient has an "aids defining illness, " such as pcp (a type of pneumonia), they are considered to have progressed to aids.

Infection severity: There are several differences between HIV and aids. Human immunodeficiency virus (HIV) is the virus that causes progressive destruction of the immune system. As the immune system declines, a person can get one of 20+ opportunistic infections associated with acquired immund deficiency syndrome (aids). A person can also have aids if their CD4 or t-cell count (marker of immune function) is <200.

HIV causes AIDS: Hiv is a virus (human immunodeficiency virus). One has HIV for many years, untreated, before one develops aids. If you think you may have been exposed to hiv, its best to be tested as soon as possible, even if you are not having any symptoms. It is best to treat HIV as early as possible, far before it develops into aids.