Bacteriological Assessment of Automated Teller and Point of Sales Machine User Interface in Uyo Metropolis, Nigeria
Journal of Advances in Biology & Biotechnology,
The Automated Teller Machine (ATM) and Point of Sales (POS) machine user interface of different banks, schools, hospitals, restaurants/eateries, shopping malls and petrol/gas stations in Uyo metropolis were bacteriologically assessed in the dry and wet seasons using cultural technique. The result of fomites key pads indicate total heterotrophic bacteria counts (THBC) was in the order: Banks > Hospitals > Schools > Petrol/Gas stations > shopping malls > Restaurants/Eateries in both seasons. There was an increase in the bacterial counts of the fomites from all locations in the wet season compared to the dry season and the difference significant (p = 0.05). The THBC from ATMs in banks, hospitals and schools ranged from 5.6 ± 0.1 to 7.8 ± 0.6 Log₁₀CFU/cm2 and from POS 3.4 ± 0.3 to 5.0 ± 0.2 Log₁₀CFU/cm2) for Petrol/Gas stations, shopping malls and Restaurants/Eateries in the wet season. The dry season revealed THBC range of 4.1± 0.6 to 6.4 ± 0.3 Log₁₀CFU/cm2 for ATMs and 2.6 ± 0.8 to 3.8 ± 0.1 Log₁₀CFU/cm2 for POS. Organisms associated with the fomites were Escherichia coli, Staphylococcus aureus, Staphylococcus epidermidis and species of Bacillus, Pseudomonas, Proteus, Streptococcus, Salmonella, Shigella, Micrococcus, Vibrio and Klebsiella. The highest and least frequency of occurrence in the dry season indicated Micrococcus (17.2%) and Vibrio (1.4%) in relation to Staphylococcus aureus (18.2%) and Proteus sp. (2.8%) in the wet season. The Gram-positive organisms exhibited high and low susceptibility to Gentamycin and Augmentin compared to Ofloxacin and Amoxicillin respectively in Gram-negative bacteria. The results indicate ATM and POS machine user interface as possible sources of pathogenic organisms. Therefore, regular cleaning of ATM and POS user interface and public awareness on the need for adequate personal hygienic practice after the use of these machines is recommended to reduce associated risks.
- Automated teller machine
- point of sales machine
- user interface
How to Cite
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