Shining a light on the pathogenicity of health care providers' mobile phones: Use of a novel ultraviolet-C wave disinfection device

Am J Infect Control. 2020 Nov;48(11):1370-1374. doi: 10.1016/j.ajic.2020.05.040. Epub 2020 Jun 5.

Abstract

Background: Mobile phones are known to carry pathogenic bacteria and viruses on their surfaces, posing a risk to healthcare providers (HCPs) and hospital infection prevention efforts. We utilize an Ultraviolet-C (UV-C) device to provide an effective method for mobile phone disinfection and survey HCPs about infection risk.

Methods: Environmental swabs were used to culture HCPs' personal mobile phone surfaces. Four cultures were obtained per phone: before and after the UV-C device's 30-second disinfecting cycle, at the beginning and end of a 12-hour shift. Surveys were administered to participants pre- and poststudy.

Results: Total bacterial colony forming units were reduced by 90.5% (P = .006) after one UV-C disinfection cycle, and by 99.9% (P = .004) after 2 cycles. Total pathogenic bacterial colony forming units were decreased by 98.2% (P = .038) after one and >99.99% (P = .037) after 2 disinfection cycles. All survey respondents were willing to use the UV-C device daily to weekly, finding it convenient and beneficial.

Discussion: This novel UV-C disinfecting device is effective in reducing pathogenic bacteria on mobile phones. HCPs would frequently use a phone disinfecting device to reduce infection risk.

Conclusions: In light of the ongoing coronavirus (COVID-19) pandemic, a standardized approach to phone disinfection may be valuable in preventing healthcare-associated infections.

Keywords: Disinfection; Healthcare associated infections; Infection control; UV-C device.

MeSH terms

  • Bacteria / pathogenicity
  • Bacteria / radiation effects*
  • Betacoronavirus / pathogenicity
  • Betacoronavirus / radiation effects*
  • COVID-19
  • Cell Phone*
  • Colony Count, Microbial
  • Coronavirus Infections / prevention & control
  • Coronavirus Infections / virology
  • Cross Infection / microbiology
  • Cross Infection / prevention & control
  • Disease Transmission, Infectious / prevention & control
  • Disinfection / instrumentation*
  • Disinfection / methods
  • Hospitals
  • Humans
  • Pandemics / prevention & control
  • Pneumonia, Viral / prevention & control
  • Pneumonia, Viral / virology
  • SARS-CoV-2
  • Ultraviolet Rays*
  • Virulence