This text, written by leading authorities on theory, research and practice in preventing HIV with diverse Latino populations and communities, responds to the diminishing returns of the behavioural model of HIV risk by deconstructing the many social ecological contexts of risk within the Latino experience.

Participatory Visual Methodologies in Global Public Health focuses on the use of participatory visual methodologies such as photovoice, participatory video (including cellphilming or the use of cell phones to make videos), drawing and mapping in public health research. These approaches are modes of inquiry that can engage participants and communities, eliciting evidence about their own health and well-being, as well as modes of representation and modes of production in the co-creation of knowledge, and modes of dissemination in relation to knowledge translation and mobilization. Thus, the production by a group of girls or young women of a set of photos or videos from their own visual perspective can offer new evidence on how, for example, they see sexual violence. Unlike other data such as those collected through surveys or even conventional interviews, the images they have produced not only inform the empirical evidence, but also do not need to remain in a laboratory or the office of a researcher. They can, through exhibitions and screenings, reach various audiences: school or health personnel, parents and community members, and perhaps also policy-makers. This collection offers a critical overview for students, practitioners, researchers and policy-makers working in or concerned with the use of participatory methodologies in public health around the globe. This book was originally published as a special issue of Global Public Health.

Opioids are responsible for the vast majority of preventable deaths related to drug use, and opioid crisis is a serious international health problem. Opioids are also the mainstay in pain treatment and are invaluable tools in palliative care. The purpose of this book is to present an overview of the complex field of opioid pharmacology through evidence-based chapters in clear language backed up with sound scientific evidence, providing researchers and health professionals with a firm understanding of their effects and mechanisms of action. The authors present an overview of the history of opioids from ancient civilizations to the current opioid crisis, covering state-of-the-art advances on opioid-induced signal transduction, opioids in pain management, and the neuroinflammatory effects of opioids. Also discussed are opioid use disorders and their treatment. The authors also review the growing body of evidence of opioid effects on innate and adaptive immune responses, discussing the molecules involved in the crosstalk between opioids and innate immunity receptors to provide an updated view of those compounds as important regulators of inflammation and host defense against pathogens and damage. The overall purpose is to provide the reader with a deeper knowledge of this field despite the complexities associated with the existence of numerous ligands, receptor subtypes, and complex pharmacological profiles. To this end, the chapter authors are specialists in the field who also have extensive experience in teaching, hoping to lend their expertise in translating complex concepts into comprehensive and clear explanations.