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It is difficult to collect the information and samples required to ascertain the risk of exposure for research in the future…
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Review Protection of the community members and workers from contamination is a challenge of exposure assessment in relation to environmental epidemiology. It is difficult to collect the information and samples required to ascertain the risk of exposure for research in the future (National Academy of Sciences, 2010). Many workers experience different number of exposures during the hazard with different intensities. This makes it difficult to assess total exposure using single exposure measurements. Owing to the poor accessibility and quality of the objective records of exposure, exposure assessment is often done using the instrument of self-assessed exposure questionnaires (Glass and Sim, 2006).
The study by Rabinowitz et al. (2005) offers a systematic review of the literature of animal sentinel to identify evidence that relates such events to the health of human beings. A weakness of this study was that it could not assess the factors causing failure of the animal sentinel studies to use cohort and case-control methods more. Such approaches prove time-consuming and expensive compared to such other methods as the aggregate and cross-sectional study designs. Funding limitations may possibly have influenced the choices of study methods of animal sentinel. Another weakness of this study is that its small sample size affects its capacity to offer valid evidence. The strength of this study is that the authors have suggested a set of linkage points which are helpful for the assessment of evidence to bridge an event of animal sentinel to the human health. The research recognized gaps in the existing knowledge like shared outcomes, inadequate shared exposures’ documentation, and the relative vulnerability between humans and animals for the hazards of environment.
References:
Glass, D. C., and Sim, M. R. (2006). The challenges of exposure assessment in health studies of
Gulf War veterans. Philosophical Transactions of the Royal Society of London. Series B.
Biological sciences. Retrieved from http://www.ncbi.nlm.nih.gov/pubmed/16687267.
National Academy of Sciences. (2010). Review of the Proposal for the Gulf Long-Term Follow-
Up Study: Highlights from the September 2010 Workshop. Retrieved from http://www.ncbi.nlm.nih.gov/books/NBK50907/.
Rabinowitz, P. M. et al. (2005). Animals as Sentinels of Human Environmental Health Hazards:
An Evidence-Based Analysis. EcoHealth. 2, 26-37. Retrieved from http://canarydatabase.org/about/ecohealth-2005-animals.pdf. Read More
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