Suchergebnisse

This volume is directed toward researchers and health professionals with an interest in the interstices of social networks and health. It consists of original papers that address critical themes in health-related social network research and disease prevention. The sections discuss the dynamics of social networks and their role in providing social support under varying conditions and contexts; how social network theory and research contribute to disease prevention and control; methodological issues that affect recall and agreement when conducting social network studies; how social networks structure and facilitate or discourage health risk; and the role of network ties in disease prevention. The volume concludes by examining the influence of social support in health promotion, symptom identification and disease management.

Recognizing that HIV transmission occurs within situated interactions between two or more people, prevention research has increasingly begun to focus on identifying the influence of situations and settings on the spread of HIV. Examination of the social geography of risk has emerged as a powerful tool for understanding where and among whom risky practices occur. In this regard, shooting galleries represent interactional territories where the normative expectations of participation within their spatial boundaries can both encourage and reinforce sex- and drug-related risky behavior. Indeed, research shows that those who inject in shooting galleries tend to be at a higher risk of transmitting HIV than those who inject elsewhere. Drawing upon data from a sample of 1,113 active injecting drug users, we examined the demographic and psychosocial factors that predict shooting gallery use. Next, we compared shooting gallery users with nonusers in terms of drug use, followed by an examination of differences in sex- and drug-related HIV risk behaviors. Then, we explored preventive practices that possibly differentiate those who use shooting galleries from those who do not. We end our analysis by discussing the implications of our results for HIV prevention and social policy.

The human life course is filled with and subject to a wide range of personal difficulties, many of which are shared by others. Social Problems across the Life Course offers accessible readings that examine the societal construction of social problems out of the personal troubles that people confront at major life stages.

This article examines the outreach-assisted peer-support (OAPS) model of group interaction as an innovative strategy to help active street addicts control, reduce, or stop their use of drugs. The OAPS model targets active street addicts who are not in treatment and who may elect to continue drug use while participating in an OAPS group. Community-outreach and network sampling methods were used to recruit active heroin and cocaine users. One hundred street addicts were invited to participate voluntarily in outreach staff-assisted, peer-support groups sessions held at two community-based sites in Chicago. Data are drawn from regular indepth interviews, ethnographic reports, and transcribed tapes of OAPS sessions. The analysis focuses on the social processes through which peers help peers to stop, control, or reduce the harm of using illegal drugs.

AbstractIntroductionAssisted partner notification (APN) safely and effectively increases partner awareness of HIV exposure, testing and case identification in community settings. Nonetheless, it has not been specifically developed or evaluated for use in prison settings where people with HIV often are diagnosed and may have difficulty contacting or otherwise notifying partners. We developed Impart, a prison‐based APN model, and evaluated its efficacy in Indonesia to increase partner notification and HIV testing.MethodsFrom January 2020 to January 2021, 55 incarcerated men with HIV were recruited as index participants from six jail and prison facilities in Jakarta in a two‐group randomized trial comparing the outcomes of self‐tell notification (treatment as usual) versus Impart APN in increasing partner notification and HIV testing. Participants voluntarily provided names and contact information for sex and drug‐injection partners in the community with whom they had shared possible HIV exposure during the year prior to incarceration. Participants randomized to the self‐tell only condition were coached in how to notify their partners by phone, mail or during an in‐person visit within 6 weeks. Participants randomized to Impart APN could choose between self‐tell notification or anonymous APN by a two‐person team consisting of a nurse and outreach worker. We compared the proportion of partners in each group who were notified of exposure by the end of 6 weeks, subsequently tested and HIV diagnosed.ResultsIndex participants (n= 55) selected 117 partners for notification. Compared to self‐tell notification, Impart APN resulted in nearly a six‐fold increase in the odds of a named partner being notified of HIV exposure. Nearly two thirds of the partners notified through Impart APN (15/24) completed HIV testing within 6 weeks post notification compared to none of those whom participants had self‐notified. One‐third of the partners (5/15) who completed HIV testing post notification were diagnosed as HIV positive for the first time.ConclusionsVoluntary APN can be successfully implemented with a prison population and within a prison setting despite the many barriers to HIV notification that incarceration presents. Our findings suggest that the Impart model holds considerable promise to increase partner notification, HIV testing and diagnosis among sex and drug‐injecting partners of HIV‐positive incarcerated men.

Abstract. Lava flow simulations help to better understand volcanic hazards and may assist emergency preparedness at active volcanoes. We demonstrate that at Fogo Volcano, Cabo Verde, such simulations can explain the 2014–2015 lava flow crisis and therefore provide a valuable base to better prepare for the next inevitable eruption. We conducted topographic mapping in the field and a satellite-based remote sensing analysis. We produced the first topographic model of the 2014–2015 lava flow from combined terrestrial laser scanner (TLS) and photogrammetric data. This high-resolution topographic information facilitates lava flow volume estimates of 43.7 ± 5.2 × 106 m3 from the vertical difference between pre- and posteruptive topographies. Both the pre-eruptive and updated digital elevation models (DEMs) serve as the fundamental input data for lava flow simulations using the well-established DOWNFLOW algorithm. Based on thousands of simulations, we assess the lava flow hazard before and after the 2014–2015 eruption. We find that, although the lava flow hazard has changed significantly, it remains high at the locations of two villages that were destroyed during this eruption. This result is of particular importance as villagers have already started to rebuild the settlements. We also analysed satellite radar imagery acquired by the German TerraSAR-X (TSX) satellite to map lava flow emplacement over time. We obtain the lava flow boundaries every 6 to 11 days during the eruption, which assists the interpretation and evaluation of the lava flow model performance. Our results highlight the fact that lava flow hazards change as a result of modifications of the local topography due to lava flow emplacement. This implies the need for up-to-date topographic information in order to assess lava flow hazards. We also emphasize that areas that were once overrun by lava flows are not necessarily safer, even if local lava flow thicknesses exceed the average lava flow thickness. Our observations will be important for the next eruption of Fogo Volcano and have implications for future lava flow crises and disaster response efforts at basaltic volcanoes elsewhere in the world.