Louisiana residents' self-reported lack of information following the Deepwater Horizon oil spill: Effects on seafood consumption and risk perception.

In 2010, the Deepwater Horizon (DWH) oil spill adversely impacted many communities along the Gulf of Mexico. Effects on Gulf waters, marshes, aquatic life, and fisheries were evident in the following days, months, and years. Through studying affected communities' perceptions regarding the DWH accident, we aim to identify behavioral changes, understand public information sources, and inform dissemination strategies that improve communications from regulatory agencies. Over a three-year period (2012-2015), residents (n = 192) from 7 coastal parishes in southeast Louisiana were surveyed about their perceptions and behaviors before, during, and after the DWH accident. Self-reported consumption of local seafood decreased significantly (50%) during the DWH oil spill but returned to pre-event reported levels by 2015. However, negative seafood quality perceptions remain and have not returned to what were generally positive pre-event levels. Over 30% of study participants trust relatives, friends, and neighbors more than government officials or scientists as information sources regarding locally harvested seafood. Importantly, nearly 50% of participants report that they lack the information needed to make informed decisions regarding the safety of consuming local seafood. We conclude that a lack of information and trust in government agencies exacerbated negative perceptions of oil spill-related dangers. In some cases, overestimation of perceived dangers likely led to behavioral modifications that persist today. Efforts should be made to improve relationships between public health agencies and communities in order to properly inform all citizens of risks following environmental disasters.

Developing a Community-Based Participatory Research Curriculum to Support Environmental Health Research Partnerships: An Initiative of the GROWH Community Outreach and Dissemination Core.

BACKGROUND: The Transdisciplinary Research Consortium for Gulf Resilience on Women's Health (GROWH) addresses reproductive health disparities in the Gulf Coast by linking communities and scientists through community-engaged research. Funded by the National Institutes of Environmental Health Sciences, GROWH's Community Outreach and Dissemination Core (CODC) seeks to utilize community-based participatory research (CBPR) and other community-centered outreach strategies to strengthen resilience in vulnerable Gulf Coast populations. The CODC is an academic-community partnership comprised of Tulane University, Mary Queen of Vietnam Community Development Corporation, Bayou Interfaith Shared Community Organizing, and the Louisiana Public Health Institute (LPHI). METHODS: Alongside its CODC partners, LPHI collaboratively developed, piloted and evaluated an innovative CBPR curriculum. In addition to helping with curriculum design, the CODC's community and academic partners participated in the pilot. The curriculum was designed to impart applied, practical knowledge to community-based organizations and academic researchers on the successful formulation, execution and sustaining of CBPR projects and partnerships within the context of environmental health research. RESULTS: The curriculum resulted in increased knowledge about CBPR methods among both community and academic partners as well as improved relationships within the GROWH CODC partnership. CONCLUSION: The efforts of the GROWH partnership and curriculum were successful. This curriculum may serve as an anchor for future GROWH efforts including: competency development, translation of the curriculum into education and training products, community development of a CBPR curriculum for academic partners, community practice of CBPR, and future environmental health work.

Evaluation of polycyclic aromatic hydrocarbons using analytical methods, toxicology, and risk assessment research: seafood safety after a petroleum spill as an example.

BACKGROUND: Polycyclic aromatic hydrocarbons (PAHs) are abundant and widespread environmental chemicals. They are produced naturally and through man-made processes, and they are common in organic media, including petroleum. Several PAHs are toxic, and a subset exhibit carcinogenic activity. PAHs represent a range of chemical structures based on two or more benzene rings and, depending on their source, can exhibit a variety of side modifications resulting from oxygenation, nitrogenation, and alkylation. OBJECTIVES: Here we discuss the increasing ability of contemporary analytical methods to distinguish not only different chemical structures among PAHs but also their concentrations in environmental media. Using seafood contamination following the Deepwater Horizon accident as an example, we identify issues that are emerging in the PAH risk assessment process because of increasing analytical sensitivity for individual PAHs, and we describe the paucity of toxicological literature for many of these compounds. DISCUSSION: PAHs, including the large variety of chemically modified or substituted PAHs, are naturally occurring and may constitute health risks if human populations are exposed to hazardous levels. However, toxicity evaluations have not kept pace with modern analytic methods and their increased ability to detect substituted PAHs. Therefore, although it is possible to measure these compounds in seafood and other media, we do not have sufficient information on the potential toxicity of these compounds to incorporate them into human health risk assessments and characterizations. CONCLUSIONS: Future research efforts should strategically attempt to fill this toxicological knowledge gap so human health risk assessments of PAHs in environmental media or food can be better determined. This is especially important in the aftermath of petroleum spills.