Telephone keyboard7/30/2023 ![]() ![]() Today, mobile phones have become one of the most indispensable accessories for professional and social life. This is often the reason why most owners do not clean and disinfect the keyboard. The majority of keyboards have over 101 individual keys, which makes it difficult and time consuming to clean. Transferred microorganisms can, especially in people with suppressed immune system, cause opportunistic infections and mild to chronic disease.Ĭomputer keyboards are among the most commonly used user interfaces. Mobile phone usage has a personal character, being attached to the close proximity of parts of the body such as the face, ears, nose, lips, and hands, which are the most common infection gateways. Depending on environmental conditions, pathogens may remain infectious on surfaces for weeks after being contaminated. Once deposited on surfaces, many infectious agents can survive for extended periods unless they are eliminated by disinfection or sterilisation procedures. Furthermore, formation of biofilm by one bacterial agent can affect the survival of other pathogens on the same surface. These attached microorganisms have a potential to be transferred to food or human body, where the growth of bacteria may continue. Predominantly Gram-positive cocci ( Staphylococcus spp., Micrococcus spp.), but also spore-forming rods ( Bacillus spp.) or Gram-negative bacteria, can be transmitted through devices like mobile phones or computer keyboards. It is generally acknowledged that inanimate objects can also carry microorganisms originating from the surrounding environment. Bacteria are found almost everywhere in air, water, soil, food, and in plants and animals organisms, including humans. In fact, 80% of infections are spread through hand contact with hands or other objects. ![]() Lack of knowledge about where germs occur could be the cause of health problems. People often believe that microbes are only present in research labs or in hospitals and clinics and thus they have a misleading feeling of security in other places. Microbial standards in hygiene are necessary for a healthy life. Cultivation of swabs performed 5 min after disinfection and subsequent calculation of the reduction of contamination have shown that simple wiping with antibacterial wet wipe led to a significant reduction of microbial contamination of surfaces, with effect ranging from 36.8 to 100%. The potentially pathogenic species were represented by Staphylococcus aureus. On the keyboards, species of the genus Bacillus and representatives of the family Enterobacteriaceae were abundant. Before the process of disinfection, on both surfaces, mobile phones, and computer keyboards, the common skin commensal bacteria like coagulase-negative staphylococci were diagnosed most frequently. Our results confirmed the high degree of surface contamination with bacteria, some of which are opportunistic pathogens for humans. The incidence and type of microorganisms isolated before and after disinfection was evaluated the difference was expressed as percentage of contamination reduction. Bacteriological swabs were taken before and after disinfection with disinfectant wipes with active ingredients chlorhexidine digluconate and triclosan. The main aim of our study was to verify the effectiveness of simple disinfection using wet wipes for reduction of microbial contamination of mobile phones and computer keyboards.
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