文章基本信息

标题：Microbial Contamination of Naira (Nigerian Currency) Notes in Circulation
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作者：E.U. Umeh ; J.U. Juluku ; T. Ichor 等
期刊名称：Research Journal of Environmental Sciences
印刷版ISSN：1819-3412
电子版ISSN：2152-8238
出版年度：2007
卷号：1
期号：6
页码：336-339
DOI：10.3923/rjes.2007.336.339
出版社：Academic Journals Inc., USA
摘要：Nigerian currency notes, the naira, in circulation within the University of Agriculture, Makurdi Campus, were surveyed for microbial contamination . The viable count ranged between 8.4x10⁴ and 7.2x10⁵ colony forming units mL^-1 of sterile water used in washing each note. The microorganisms isolated from the notes were Escherichia coli (80%), Aerobacter (59%), Salmonella (40.9%), yeast cells (36.4%), Streptococcus faecalis (31.8%), Staphylococcus aureus (27.3%) and coagulase-negative staphylococci (18.2%), Streptococcus faecalis (31.8%), Aerobacter (59%), Salmonella (40.9%) and yeast cells (36.4%). Contamination was significantly correlated with the denomination of the notes (r = -0.304; p = 0.019). Lower denomination notes were more contaminated than higher denomination notes (χ² = 34.036; p = 0.03). Dirty and tattered notes had more contaminants than cleaner and newer notes (χ² = 11.324; p = 0.01). This study has demonstrated that naira notes could be sources of contamination by microbial pathogens.