Is PrEP effective for preventing transmission from injection drug use?

Transcript: 

So what’s important about PrEP is, it’s not just about preventing HIV in the context of sex. 99% effectiveness in preventing HIV through sexual transmission, but it also works for people who inject drugs.

There are studies that show a better than 80% reduction in risk that happens in people who inject drugs, especially when coupled with other strategies to reduce the risk of HIV transmission.