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were found on all banknotes, on and 12 species of bacteria, 3 genera
average 54.86x106CFU/cm3. The and 2 species of yeast, and 1 genus and
denominations of $5,000, $20,000 5 species of filamentous fungi were
and $50,000 they did not present identified. Bacillus subtilis was present
significant differences regarding the in 48% of banknotes; Staphylococcus
issuance dates; however, for the $2,000 spp., in 30%; Staphylococcus aureus,
and $10,000 bills they found significant in 24%; Bacillus cereus, in 22%;
differences. Kendall’s Tau b correlation Corynebacterium spp., in 18%; Listeria
coefficient was very close to zero spp., in 18% and Streptococcus spp.,
(0.157), which indicates that there is no in 18%. Escherichia coli, Klesiella
linear cause-effect relationship between spp., Shigella spp., Listeria spp. and
the denomination of the banknotes and Corynebacterium spp. they were present
the number of viable microorganisms. in less than 14% of banknotes. The
The texture of the banknotes was probability of occurrence of nosocomial,
rough, with deterioration of edges, dermal and respiratory diseases
contamination with ink and foreign transmitted by handling of banknotes is
elements, the humidity is between 0.04 high, due to the presence of potentially
and 0.1%, the pH between 5.4 and 6.4 pathogens on all banknotes analyzed.
and local temperature 26°C, make a
surface suitable for the growth of large
variety of microorganisms. 21 genera

REFERENCIAS

Aguilera, N.; Fretes, A.; Medina, J. Sharma, S.; Sumbali, G. (2014).
(2013). Análisis bacteriológico Contaminated money in
de billetes circulantes en la circulation: A review. International
Universidad del Pacífico Paragay. Journal of Recent Scientific
CIMEL, 21(1), 31-33. Research, 5(6), 1533-1540.
Schaarschimidt, J. (1884). Upon The
occurrence of bacteria and minute
algae on the surface of paper
money. Nature, 30(306).

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