Is that OTWP's top seven Billboard hits? I've seen his name before, so this one guy made all those casual contact posts...okay.
Boiled peanuts
Blood on light switch
Shaking hands
Wife wears no panties
Finger Printing
Water splash in eye from cleaning toilet
Baby Puke
MOVE ON...
trust me on this one, there is no chance of infection. do not worry at all. previous scratches, etc are proably scabbed over and even if they weren't you are fine. you would get yourself into every major journal if you contracted hiv from such an exposure...it isn't going to happen.
find something else to occupy your mind