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Horseradish peroxidase has been used to generate iodine compositions that comprised principally free molecular iodine. The concentration of free molecular iodine in these enzyme-based compositions ranged from 44 to 63% of the thiosulphate titratable iodine; this is substantially higher than the corresponding value for the povidone-iodine preparation(More)
An enzyme-based iodine (EBI) disinfectant that continuously generates free molecular iodine in a controlled fashion was developed and evaluated for use in disinfecting flexible fibreoptic endoscopes (FFEs). EBI is a powder concentrate that produces iodine from sodium iodide and calcium peroxide when catalyzed by horseradish peroxidase. After dissolution in(More)
Noroviruses (NoVs) cause gastroenteritis in all age groups. To investigate an acute gastroenteritis outbreak in Shenzhen, South China, we analyzed the presence of NoVs in fecal specimens and drinking water samples. Viral RNAs were extracted from fecal suspensions and water concentrates made by membrane adsorption-elution, and NoV was detected by reverse(More)
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