when a person has HIV or full blown aids, it harms the immune system
AIDS has nothing to do with age. You can be born with AIDS if your mother has it. You can get it any time by contact with infected body fluid like blood or semen. The most common way to get AIDS is by unprotected sex.
By being infected with the AIDS virus.
By swapping body fluids with someone who's infected with HIV, then waiting until it develops into AIDS.
leukocytes
About 1.1 people in the United States are infected with HIV/AIDS
Basically all of it.
you get aids when an infected person introduces the virus into any living tissue of yours. aids is not a respecter of man as in law. it affects any body provided you avail yourself to its causes.
Figure it out
Yes, if the semen is infected with the aids virus.
Zambia on the continent of Africa has the highest rate of AIDS and % infected.
Receive it from an infected person.
There is a risk of HIV infection anytime certain fluids of the body (blood and semen) are exchanged. This means the infected blood would have to come in contact with an open sore perhaps in your mouth. The virus has a limited lifespan outside of the body, but there is a risk here. Please work on your language skills--I am not sure what you are saying exactly.