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Investigation into the prevalence, persistence and antibiotic resistance profiles of staphylococci isolated from euro currency.

Abstract：

AIMS:The study set out to sample € 10 banknotes for the presence of coagulase-positive staphylococci (CPS) such as Staphylococcus aureus (S. aureus) and coagulase-negative staphylococci (CoNS) in Southern Ireland, to assess the levels of antibiotic resistance among those isolated, and determine the persistence of S. aureus on € 10 banknotes and € 2 coins. METHODS AND RESULTS:We report that 97% of € 10 banknotes screened (n = 155) harboured multiple species of staphylococci. From the generated bank of strains, a total of 150 representative staphylococci isolates were used for further study, 71 were CPS and 79 were CoNS. Of these, we found that 62% of the staphylococci demonstrated resistance to at least one of the first-line antibiotics (52.11% of CPS isolates and 76.71% of the CoNS isolates). Resistance to multiple antibiotics was seen in 31.18% of the resistant isolates. In relation to persistence studies, S. aureus was shown to remain viable on euro banknotes and coins for significant periods (on average, 19.33 days on € 10 banknotes and 16.67 days on € 2 coins) as determined using bioluminescence. CONCLUSIONS:We advocate the expansion of antibiotic surveillance programs, with a view to tracking/monitoring antibiotic resistance dissemination among environmental contaminants. Additionally, we propose that 'cashless transactions' should be encouraged in high-risk environments such as hospitals and healthcare settings, as well as stricter infection controls. SIGNIFICANCE AND IMPACT OF THE STUDY:Although it is accepted that circulating currency has the potential to harbour disease-causing pathogens, studies investigating prevalence and persistence of such pathogens on euro currency are virtually nonexistent. In an attempt to rectify this, we examined the prevalence of staphylococci on € 10 banknotes in Ireland and reported relatively high levels of antibiotic resistance among the isolates. Furthermore, we have established the persistence of S. aureus on euro currency for the first time.

journal_name

J Appl Microbiol

journal_title

Journal of applied microbiology

authors

Gabriel EM,Coffey A,O'Mahony JM

doi

10.1111/jam.12247

subject

Has Abstract

pub_date

2013-08-01 00:00:00

pages

565-71

issue

eissn

1364-5072

issn

1365-2672

journal_volume

115

pub_type

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Investigation into the prevalence, persistence and antibiotic resistance profiles of staphylococci isolated from euro currency.