The same way anyone else can get it...through open body to body contact with fliuds such as blood, semen, vaginal secretions and breast milk.
A person with HIV can certainly hold a position as a police officer.
There is currently no cure for HIV.
HIV can be transmitted by blood and breast milk. HIV can't be transmitted by sweat and saliva.
2 of several ways that many contract HIV infection is unprotected sex and sharing of needles.
No. HIV is an infectous virus and you can only get it certain ways and fighting isn't one of them.
There is one main way (there are more ways) to get HIV. Someone like Miley Cyrus, you know how she could have HIV.
Gvu
HIV, like any other virus, can be destroyed by heat or by disinfectant chemicals.
The most common way to pass on HIV person to person is by sexual contact.
Certainly. HIV can spread through other ways that sexual contact. And if the "virgin" has been doing oral or anal sex, then those are also possible ways to pick up HIV.
Unprotected sex or sharing needles is how you would become infected by HIV from a boy.
You need to talk to a qualified medical practitioner (a Doctor) about this.