There is hardly any reason to be seriously concerned about health and safety. The risk to HIV or other STDs is only as high as the behaviors you engage in. The stories about PC not being very responsive about sexual assault are outdated, as of now. I know a few people who have been victims of different crimes (not necessarily assaults, but gropings, robberies etc) and PC is very supportive. They help you deal with the local police and support you throughout the whole process. That being said, these occurrences are rare. It is like going anywhere: if you go to NYC, you learn which places you can go at night and which to avoid. Same thing with any developing country. Obviously as a foreigner, you will be more of a target than a local. But it really depends on where you go. I felt very safe in my community. And the more you integrate into your village, the more locals will want to protect you. Obviously things can still happen. But they also happen in the states. But like you said, Peace Corps gives a lot of training on risk management and crime mitigation.