Bacterial Contamination and Antimicrobial Resistance Patterns of Healthcare Workers' Mobile Phones in Hospitals at Khartoum City

Abstract

Background: Mobile phones used by healthcare workers (HCWs) have emerged as potential reservoirs for pathogens, posing a risk of healthcare-associated infections (HAIs). This study aimed to investigate the prevalence of bacterial contamination on HCWs' mobile phones, determine the antimicrobial susceptibility patterns, and compare findings with global data. Methods: We collected swabs from 94 mobile phones of HCWs across two hospitals in Khartoum. We identified bacterial isolates using standard microbiological techniques and evaluated antimicrobial resistance using the Kirby-Bauer disk diffusion method. Results: Bacterial contamination appeared in 93.6% of mobile phones. Gram-positive bacteria, such as Coagulase-negative staphylococci (36%) and S. aureus (31.8%) were prevalent. Gram-negative organisms were isolated. The predominant organisms were Klebsiella pneumoniae 15 (37%) isolates followed by Pseudomonas aeruginosa 12 (30%) isolates, Proteus mirabilis 5 (12%) isolates, Acintobacter baumannii 4 (10%), Enterobacter spp 3(8%) and Escherichia coli 1 (3%). Antimicrobial susceptibility tests revealed high resistance to penicillin among Gram-positive isolates. The tests revealed no multidrug-resistant (MDR) or extended-spectrum beta-lactamase (ESBL) production. Conclusion: HCWs' mobile phones represent a critical vector for bacterial transmission in hospitals. Stringent infection control measures and regular disinfection should mitigate the associated risks.