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

Abstract

Overview

We conducted a study to assess the quantitative and qualitative extent of bacterial contamination on mobile phones (MPs) among healthcare university students. This investigation involved administering questionnaires and sampling the MPs of 83 participants, following a cross-sectional design approach.

Findings

• The study identified high levels of bacterial contamination, particularly at temperatures of 37 °C and with Staphylococci bacteria, presenting counts of 416 and 442 CFU/dm2, respectively. Other bacteria such as Enterococci and Gram-negative bacteria were less frequently detected.
• A statistically significant positive correlation was observed between the European head specific absorption rate (SAR) and both HPC 37 °C and Staphylococci levels. Further, Enterococci displayed significant correlations with other studied bacterial groups.
• Differences in bacterial load were notably affected by the type and frequency of internship attendance, with daily attendees showing higher contamination levels.

Conclusion

The findings highlight that bacterial survival on mobile phones is influenced significantly by user habits, device characteristics, and exposure to specific electromagnetic fields, which calls for increased awareness and preventive measures in healthcare environments.