Research Article
Volume 17 Issue 3 - 2021
The Quality of Chemical Surface Disinfectants Used to Reduce Microbial Contamination Inside the Emergency Departments in Benghazi Medical Center Hospital - Benghazi City - Libya
Dareen El Shareef Ahmed Jadullah1*, Abd Elmoniem Mohamid Obid2, Aman Gupta3 and Ana Janic4
1Microbiology, Faculty of Pharmacy, Benghazi University, Benghazi, Libya
2Public Health, Health Environment, Benghazi University, Benghazi, Libya
3Assistant Professor, Division of Biomedical sciences, University of Detroit Mercy, School of Dentistry, USA
4Assistant Professor, Clinical Division, University of Detroit Mercy, School of Dentistry, USA
*Corresponding Author: Dareen El Shareef Ahmed Jadullah, Microbiology, Faculty of Pharmacy, Benghazi University, Benghazi, Libya.
Received: July 05, 2020; Published: February 27, 2021


Work in Hospital Emergency Departments exposes both emergency ward staff and patients to certain bacteria, viruses and other infectious agents. Samples were collected from various surfaces and equipment in Hospital Emergency Departments (HEDs). In total, 60 swabs were collected at pre- and post-cleaning stages and were cultured and identified using standard microbiological procedures. The type of microorganism, proportion of positive and negative cultures (both before and after cleaning) and all bacterial isolates were tested for in vitro antibiotic disc sensitivity. The results of this study show the presence of pathogenic bacteria in samples collected from Hospital Emergency Departments (HEDs). The types of bacteria isolated from floors, doors, treatment tables, wash basins, anesthetist machines, patient beds, laryngoscopes and operation tables in the emergency department were Micrococcus laylai (27.30%), Rhizobium radiobacter and Pseudomonas aeruginosa, Escherichia coli (13.64%), Stenotrophomonas maltophilia, Staphylococcus aureus, Globicatella sanguinis and Acinetobacter baumannii (9.10%), Arcanobacterium pyogenes and Bacillus cereus (4.55%). From our investigation and evaluation of quality of cleaning inside the ER that was done by using questionnaire method, we found reduction in quality to 10.5% during night shift. Various factors that contributed to improper disinfection were shortage of, or poor training of the cleaning staff about the correct cleaning methods and lack of experience of staff in handling various types of chemical disinfectants. The relatively high level of contamination by bacteria in HEDs could also be due to the lack of standard infection control precautions. In terms of effectiveness of disinfectants, no single product can provide optimum performance on all surfaces. In our study, Husky, Dialkyl Quaternary ammonium compound-ACS, was found to be more effective in killing broad spectrum of organisms as compared to Konex, Didecyl dimethyl ammonium chloride- DDAC. A third disinfectant called Surfa’safe was also tested but was rendered ineffective, since no change was observed in bacterial contamination before and after its use on highly contaminated areas.

Keywords: Microbial Contamination; Emergency Departments; Disinfection; Antimicrobial Resistance; Harmful Biological Agents


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Citation: Dareen El Shareef Ahmed Jadullah., et al. “The Quality of Chemical Surface Disinfectants Used to Reduce Microbial Contamination Inside the Emergency Departments in Benghazi Medical Center Hospital - Benghazi City - Libya”. EC Microbiology 17.3 (2021): 22-35.

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