This Is How The HIV Virus Operates!
It behaves in the following manner.
1. It attacks your Immune or D4 cells, by attaching itself to the protein that covers those cells.
2. The protein cover is fooled into thinking it is a friend, and allows the virus in.
3, Then the HIV virus replicates until it explodes, or bursts open that cell, thus destroying it.
So by destroying those D4 cells, you no longer have immunity to any virus, as the HIV destroys your immune system in this fashion.
Leading to the status AIDS, or Acquired Immunity Deficiency Syndrome.
Derryck S. Griffith.