@Elliuqahs951120,
I understood that police and paramedics who might be exposed to a person infected with HIV have available a HIV test that can detect it between one or two weeks.
Also, in case they were infected, they have available an immediate treatment which works while the virus is active in the first phase.
This fast action against HIV in its early stage apparently helps to diminish -to zero levels- the future consequences caused by the infection.