Microbiological analysis of banknotes circulating in the Venda region of Limpopo province, South Africa
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1 octobre 2007
- handle: 10670/1.dbird5
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E.O. Igumbor et al., « Microbiological analysis of banknotes circulating in the Venda region of Limpopo province, South Africa », South African Journal of Science, ID : 10670/1.dbird5
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WE EXAMINED USED AND NEW BANK-notes in various denominations, circulating in the Limpopo province of South Africa, for the presence of microorganisms using the rinse method. Used banknotes were collected from open-air markets, banks, filling-stations, supermarkets, residential homes and hostels. Bacteria and/or fungi were isolated from 96% of the used banknotes, and none from the new (control) notes. Twelve bacterial and one fungal species were isolated, with Staphylococcus epidermidis (13%), Candida albicans (13%), Klebsiella species (11%) and Staphylococcus aureus (11%) being the most prevalent. The low-denomination notes (R10 and R20) were the most contaminated. Infected currency is identified as a potential public health hazard, as pathogens can be spread by circulating banknotes. Immunocompromised persons stand the risk of acquiring opportunistic infections, such as C. albicans, through handling of contaminated currency.