Microbial evaluation of Naira notes in circulation in Yola metropolis, Adamawa state, Nigeria
Adeyemo Moses Olumuyiwa, Adegoke Paul O Abiodun and Adegoke Kafayat Adetola
The unhygienic state of most Naira currency notes in circulation in most markets in Yola metropolis of Adamawa State necessitate this research, to evaluate the microbial loads on these notes. Naira currency notes (N) of all denominations were randomly collected from traders in the markets. The mean average bacterial count on the notes was between 1.44 x 103 cfu/ml to 7.60 x 102 cfu/ml, while fungal counts ranged between 2.57 x 103 cfu/ml to 1.00 x 102 cfu/ml. The lowest and highest bacterial and fungal counts were found in the N1000.00 and N5.00 notes respectively. The bacterial genera isolated were Staphylococcus species, Klebsiella species, Pseudomonas species and Escherichia coli while Aspergillus species, Fusarium species, Penicillium species and Mucor species genera were isolated.