Theres a posiblities to transmist hiv virus by scratch,
I was in basketball court this morning, i played basketball and one of a guy had actively bleeding in hands and accidentally scratch me in my arms that cause a tear in my skin and immediately bleed out, lots of blood came from him goes to my arms
If his finger nails had a blood and scratch me with finger nails and cause a tear in my skin, do i need to be worry?