What is the mechanism by which the AIDS virus causes deficiency of immune system of the infected person ?

Explanation

Virus enters macrophages.
RNA genome of the virus gets replicated to form viral DNA with the help of enzymes reverse transcriptase.
Viral DNA gets incorporated into the host cell.s DNA.
Now viral DNA directs host cells DNA to produce viral particles.
Simultaneously, HIV enters into the T-lymphocytes and replicate to produce progeny viruses.
Progeny viruses are released into blood.
It attacks other T - lymphocytes.
The above process is repeated.
It leads to decrease in the number of helper T-cells in body.
As a result immunity decrease.