Bacterial Contamination of Healthcare Students' Mobile Phones: Impact of Specific Absorption Rate (SAR), Users' Demographics and Device Characteristics on Bacterial Load

Authors: Maurici M, Pica F, D'Alò GL, Cicciarella Modica D, Distefano A, Gorjao M, Simonelli MS, Serafinelli L, De Filippis P

Year: 2023 Jun 8

Category: Microbiology

Journal: Life (Basel)

DOI: 10.3390/life13061349

URL: https://www.mdpi.com/2075-1729/13/6/1349

Abstract

Overview

We conducted a comprehensive examination of the bacterial contamination present on mobile phones (MPs) among healthcare university students. This investigation involved assessing both the qualitative and quantitative aspects of microbial presence on these devices.

Methodology

The study adopted a cross-sectional design where we sampled and evaluated the MPs of 83 healthcare students using heterotrophic plate counts (HPC) at two temperatures (22 °C and 37 °C), alongside specific tests for Enterococci, Gram-negative bacteria, and Staphylococci.

Findings

  • The count for HPC 37 °C and Staphylococci was the highest, measuring 416 and 442 CFU/dm2, respectively.
  • Majority of the MPs sampled showed positive results for HPC 37 °C, HPC 22 °C, and Staphylococci, with percentages around 98%.
  • There was a statistically significant positive correlation between the European head specific absorption rate (SAR) and the levels of HPC 37 °C and Staphylococci.
  • Enterococci displayed strong correlations with other bacterial counts and a moderate correlation with Staphylococci.

Conclusion

This study illustrates the significant role of users' habits and device characteristics, including SAR, in influencing bacterial contamination. Our findings emphasize the health implications of device handling and maintenance in healthcare environments.

bacterial contamination mobile phones healthcare students specific absorption rate device characteristics
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