Prep prep prep prep prep. You hear a lot about PrEP these days. Here is a commentary about pre-exposure propylaxis among people who use drugs. http://www.jiasociety.org/index.php/jias/article/view/21112/pdf_1 There is little evidence that PrEP prevents bloodborne HIV transmission in people who inject drugs. https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=9&ved=0ahUKEwi71oTwm87RAhVHxWMKHVMrBIwQFghNMAg&url=http%3A%2F%2Fapps.who.int%2Firis%2Fbitstream%2F10665%2F128115%2F1%2FWHO_HIV_2014.10_eng.pdf&usg=AFQjCNH3-Q4uUAWyqXczfdxEc1qH_N-jpw&cad=rja Jamie