I am talking about vulnerable people with emphasis on sex workers who are unaffected and HIV positive and who do not have access to health care living in the border province of the Democratic Republic of Congo. The aim of this book is not to be as exhaustive as possible, but rather to inventory, in a general way, the problems of prevention and screening as well as access to care for vulnerable people, through different contributions and various testimonies. It is therefore a collection of subjective points of view, with recommendations to be found in each point. I dedicate the book to the reader of the whole world, the researcher, partner, health professional as well as the decision maker.