Fecal contamination, Persistence, Fecal stanols, Oyster, Microcosms, Seawater, Seawater - microbiology, Shellfish, Food Contamination - analysis, Humans, Ostreidae - chemistry, Environmental Monitoring - methods, Seawater - chemistry, Feces - microbiology, Animals, Feces - chemistry, Cholestanol - analysis, Sitosterols - analysis, Escherichia coli - isolatio...